CVE-2024-38540

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-38540", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-06-18T19:36:34.918Z", "datePublished": "2024-06-19T13:35:15.823Z", "dateUpdated": "2026-05-11T20:18:38.958Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:18:38.958Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\n\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\nwith hwq_attr->aux_depth != 0 and hwq_attr->aux_stride == 0.\nIn that case, \"roundup_pow_of_two(hwq_attr->aux_stride)\" gets called.\nroundup_pow_of_two is documented as undefined for 0.\n\nFix it in the one caller that had this combination.\n\nThe undefined behavior was detected by UBSAN:\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\n shift exponent 64 is too large for 64-bit type 'long unsigned int'\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\n Call Trace:\n <TASK>\n dump_stack_lvl+0x5d/0x80\n ubsan_epilogue+0x5/0x30\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __kmalloc+0x1b6/0x4f0\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\n create_qp.part.0+0x128/0x1c0 [ib_core]\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\n create_mad_qp+0x8e/0xe0 [ib_core]\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\n ib_mad_init_device+0x2be/0x680 [ib_core]\n add_client_context+0x10d/0x1a0 [ib_core]\n enable_device_and_get+0xe0/0x1d0 [ib_core]\n ib_register_device+0x53c/0x630 [ib_core]\n ? srso_alias_return_thunk+0x5/0xfbef5\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\n auxiliary_bus_probe+0x49/0x80\n ? driver_sysfs_add+0x57/0xc0\n really_probe+0xde/0x340\n ? pm_runtime_barrier+0x54/0x90\n ? __pfx___driver_attach+0x10/0x10\n __driver_probe_device+0x78/0x110\n driver_probe_device+0x1f/0xa0\n __driver_attach+0xba/0x1c0\n bus_for_each_dev+0x8f/0xe0\n bus_add_driver+0x146/0x220\n driver_register+0x72/0xd0\n __auxiliary_driver_register+0x6e/0xd0\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n do_one_initcall+0x5b/0x310\n do_init_module+0x90/0x250\n init_module_from_file+0x86/0xc0\n idempotent_init_module+0x121/0x2b0\n __x64_sys_finit_module+0x5e/0xb0\n do_syscall_64+0x82/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode+0x75/0x230\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_syscall_64+0x8e/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __count_memcg_events+0x69/0x100\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? count_memcg_events.constprop.0+0x1a/0x30\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? handle_mm_fault+0x1f0/0x300\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_user_addr_fault+0x34e/0x640\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f4e5132821d\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\n </TASK>\n ---[ end trace ]---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/bnxt_re/qplib_fp.c"], "versions": [{"version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "66a9937187ac9b5c5ffff07b8b284483e56804d1", "status": "affected", "versionType": "git"}, {"version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "84d2f29152184f0d72ed7c9648c4ee6927df4e59", "status": "affected", "versionType": "git"}, {"version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "a658f011d89dd20cf2c7cb4760ffd79201700b98", "status": "affected", "versionType": "git"}, {"version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "627493443f3a8458cb55cdae1da254a7001123bc", "status": "affected", "versionType": "git"}, {"version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "8b799c00cea6fcfe5b501bbaeb228c8821acb753", "status": "affected", "versionType": "git"}, {"version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "78cfd17142ef70599d6409cbd709d94b3da58659", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/infiniband/hw/bnxt_re/qplib_fp.c"], "versions": [{"version": "5.7", "status": "affected"}, {"version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.181", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.117", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.33", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.12", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.3", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.181"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.117"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.6.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.8.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.9.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.10"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/66a9937187ac9b5c5ffff07b8b284483e56804d1"}, {"url": "https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59"}, {"url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98"}, {"url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc"}, {"url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753"}, {"url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659"}], "title": "bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-noinfo Not enough information"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2024-06-24T15:37:42.492444Z", "id": "CVE-2024-38540", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-07T19:54:28.166Z"}}, {"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:55:46.119Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T21:55:46.119Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-38540", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-24T15:37:42.492444Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "description": "CWE-noinfo Not enough information"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-24T15:37:48.896Z"}}], "cna": {"title": "bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "66a9937187ac9b5c5ffff07b8b284483e56804d1", "versionType": "git"}, {"status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "84d2f29152184f0d72ed7c9648c4ee6927df4e59", "versionType": "git"}, {"status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "a658f011d89dd20cf2c7cb4760ffd79201700b98", "versionType": "git"}, {"status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "627493443f3a8458cb55cdae1da254a7001123bc", "versionType": "git"}, {"status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "8b799c00cea6fcfe5b501bbaeb228c8821acb753", "versionType": "git"}, {"status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "lessThan": "78cfd17142ef70599d6409cbd709d94b3da58659", "versionType": "git"}], "programFiles": ["drivers/infiniband/hw/bnxt_re/qplib_fp.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"status": "unaffected", "version": "0", "lessThan": "5.7", "versionType": "semver"}, {"status": "unaffected", "version": "5.15.181", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.117", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.33", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.8.12", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9.3", "versionType": "semver", "lessThanOrEqual": "6.9.*"}, {"status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/infiniband/hw/bnxt_re/qplib_fp.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/66a9937187ac9b5c5ffff07b8b284483e56804d1"}, {"url": "https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59"}, {"url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98"}, {"url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc"}, {"url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753"}, {"url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\n\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\nwith hwq_attr->aux_depth != 0 and hwq_attr->aux_stride == 0.\nIn that case, \"roundup_pow_of_two(hwq_attr->aux_stride)\" gets called.\nroundup_pow_of_two is documented as undefined for 0.\n\nFix it in the one caller that had this combination.\n\nThe undefined behavior was detected by UBSAN:\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\n shift exponent 64 is too large for 64-bit type 'long unsigned int'\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\n Call Trace:\n <TASK>\n dump_stack_lvl+0x5d/0x80\n ubsan_epilogue+0x5/0x30\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __kmalloc+0x1b6/0x4f0\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\n create_qp.part.0+0x128/0x1c0 [ib_core]\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\n create_mad_qp+0x8e/0xe0 [ib_core]\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\n ib_mad_init_device+0x2be/0x680 [ib_core]\n add_client_context+0x10d/0x1a0 [ib_core]\n enable_device_and_get+0xe0/0x1d0 [ib_core]\n ib_register_device+0x53c/0x630 [ib_core]\n ? srso_alias_return_thunk+0x5/0xfbef5\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\n auxiliary_bus_probe+0x49/0x80\n ? driver_sysfs_add+0x57/0xc0\n really_probe+0xde/0x340\n ? pm_runtime_barrier+0x54/0x90\n ? __pfx___driver_attach+0x10/0x10\n __driver_probe_device+0x78/0x110\n driver_probe_device+0x1f/0xa0\n __driver_attach+0xba/0x1c0\n bus_for_each_dev+0x8f/0xe0\n bus_add_driver+0x146/0x220\n driver_register+0x72/0xd0\n __auxiliary_driver_register+0x6e/0xd0\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n do_one_initcall+0x5b/0x310\n do_init_module+0x90/0x250\n init_module_from_file+0x86/0xc0\n idempotent_init_module+0x121/0x2b0\n __x64_sys_finit_module+0x5e/0xb0\n do_syscall_64+0x82/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode+0x75/0x230\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_syscall_64+0x8e/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __count_memcg_events+0x69/0x100\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? count_memcg_events.constprop.0+0x1a/0x30\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? handle_mm_fault+0x1f0/0x300\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_user_addr_fault+0x34e/0x640\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f4e5132821d\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\n </TASK>\n ---[ end trace ]---"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.181", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.117", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.33", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.8.12", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.9.3", "versionStartIncluding": "5.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.10", "versionStartIncluding": "5.7"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:18:38.958Z"}}}, "cveMetadata": {"cveId": "CVE-2024-38540", "state": "PUBLISHED", "dateUpdated": "2026-05-11T20:18:38.958Z", "dateReserved": "2024-06-18T19:36:34.918Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-06-19T13:35:15.823Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/infiniband/hw/bnxt_re/qplib_fp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "66a9937187ac9b5c5ffff07b8b284483e56804d1", "status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "versionType": "git"}, {"lessThan": "84d2f29152184f0d72ed7c9648c4ee6927df4e59", "status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "versionType": "git"}, {"lessThan": "a658f011d89dd20cf2c7cb4760ffd79201700b98", "status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "versionType": "git"}, {"lessThan": "627493443f3a8458cb55cdae1da254a7001123bc", "status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "versionType": "git"}, {"lessThan": "8b799c00cea6fcfe5b501bbaeb228c8821acb753", "status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "versionType": "git"}, {"lessThan": "78cfd17142ef70599d6409cbd709d94b3da58659", "status": "affected", "version": "0c4dcd602817502bb3dced7a834a13ef717d65a4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/infiniband/hw/bnxt_re/qplib_fp.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.7"}, {"lessThan": "5.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.181", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.117", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.33", "versionType": "semver"}, {"lessThanOrEqual": "6.8.*", "status": "unaffected", "version": "6.8.12", "versionType": "semver"}, {"lessThanOrEqual": "6.9.*", "status": "unaffected", "version": "6.9.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "6F73CA47-4230-43ED-A152-CD093E87C1F3", "versionEndExcluding": "6.1.117", "versionStartIncluding": "5.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "FCE796DF-3B50-4DC6-BAE5-95271068FC9E", "versionEndExcluding": "6.6.33", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "80550309-67AB-4FD1-AC07-3DED5C4F01B2", "versionEndExcluding": "6.8.12", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "E07124C1-19E8-4D21-828D-9932A01D3011", "versionEndExcluding": "6.9.3", "versionStartIncluding": "6.9", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\n\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\nwith hwq_attr->aux_depth != 0 and hwq_attr->aux_stride == 0.\nIn that case, \"roundup_pow_of_two(hwq_attr->aux_stride)\" gets called.\nroundup_pow_of_two is documented as undefined for 0.\n\nFix it in the one caller that had this combination.\n\nThe undefined behavior was detected by UBSAN:\n UBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\n shift exponent 64 is too large for 64-bit type 'long unsigned int'\n CPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\n Hardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\n Call Trace:\n <TASK>\n dump_stack_lvl+0x5d/0x80\n ubsan_epilogue+0x5/0x30\n __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\n __roundup_pow_of_two+0x25/0x35 [bnxt_re]\n bnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\n bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\n bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __kmalloc+0x1b6/0x4f0\n ? create_qp.part.0+0x128/0x1c0 [ib_core]\n ? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\n create_qp.part.0+0x128/0x1c0 [ib_core]\n ib_create_qp_kernel+0x50/0xd0 [ib_core]\n create_mad_qp+0x8e/0xe0 [ib_core]\n ? __pfx_qp_event_handler+0x10/0x10 [ib_core]\n ib_mad_init_device+0x2be/0x680 [ib_core]\n add_client_context+0x10d/0x1a0 [ib_core]\n enable_device_and_get+0xe0/0x1d0 [ib_core]\n ib_register_device+0x53c/0x630 [ib_core]\n ? srso_alias_return_thunk+0x5/0xfbef5\n bnxt_re_probe+0xbd8/0xe50 [bnxt_re]\n ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\n auxiliary_bus_probe+0x49/0x80\n ? driver_sysfs_add+0x57/0xc0\n really_probe+0xde/0x340\n ? pm_runtime_barrier+0x54/0x90\n ? __pfx___driver_attach+0x10/0x10\n __driver_probe_device+0x78/0x110\n driver_probe_device+0x1f/0xa0\n __driver_attach+0xba/0x1c0\n bus_for_each_dev+0x8f/0xe0\n bus_add_driver+0x146/0x220\n driver_register+0x72/0xd0\n __auxiliary_driver_register+0x6e/0xd0\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n bnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\n ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\n do_one_initcall+0x5b/0x310\n do_init_module+0x90/0x250\n init_module_from_file+0x86/0xc0\n idempotent_init_module+0x121/0x2b0\n __x64_sys_finit_module+0x5e/0xb0\n do_syscall_64+0x82/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode_prepare+0x149/0x170\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? syscall_exit_to_user_mode+0x75/0x230\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_syscall_64+0x8e/0x160\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? __count_memcg_events+0x69/0x100\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? count_memcg_events.constprop.0+0x1a/0x30\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? handle_mm_fault+0x1f0/0x300\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? do_user_addr_fault+0x34e/0x640\n ? srso_alias_return_thunk+0x5/0xfbef5\n ? srso_alias_return_thunk+0x5/0xfbef5\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n RIP: 0033:0x7f4e5132821d\n Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\n RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\n RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\n RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\n RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\n R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\n R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\n </TASK>\n ---[ end trace ]---"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bnxt_re: evita el comportamiento de cambio indefinido en bnxt_qplib_alloc_init_hwq El comportamiento indefinido se activa cuando se llama a bnxt_qplib_alloc_init_hwq con hwq_attr-&gt;aux_ Depth != 0 y hwq_attr-&gt;aux_stride == 0. En ese caso, \" Se llama a roundup_pow_of_two(hwq_attr-&gt;aux_stride)\". roundup_pow_of_two est\u00e1 documentado como indefinido para 0. Corr\u00edjalo en la \u00fanica persona que llam\u00f3 que ten\u00eda esta combinaci\u00f3n. UBSAN detect\u00f3 el comportamiento indefinido: UBSAN: desplazamiento fuera de los l\u00edmites en ./include/linux/log2.h:57:13 el exponente de desplazamiento 64 es demasiado grande para CPU 'long unsigned int' de tipo de 64 bits: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4 Nombre del hardware: Abacus electric, sro - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 25/10/2023 Seguimiento de llamadas: &lt; TAREA&gt; dump_stack_lvl+0x5d/0x80 ubsan_epilogue+0x5/0x30 __ubsan_handle_shift_out_of_bounds.cold+0x61/0xec __roundup_pow_of_two+0x25/0x35 [bnxt_re] bnxt_qplib_alloc_init_hwq+0xa1/0x470 bnxt_re] bnxt_qplib_create_qp+0x19e/0x840 [bnxt_re] bnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re ] ? srso_alias_return_thunk+0x5/0xfbef5? srso_alias_return_thunk+0x5/0xfbef5? __kmalloc+0x1b6/0x4f0 ? create_qp.part.0+0x128/0x1c0 [ib_core]? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re] create_qp.part.0+0x128/0x1c0 [ib_core] ib_create_qp_kernel+0x50/0xd0 [ib_core] create_mad_qp+0x8e/0xe0 [ib_core] ? __pfx_qp_event_handler+0x10/0x10 [ib_core] ib_mad_init_device+0x2be/0x680 [ib_core] add_client_context+0x10d/0x1a0 [ib_core] enable_device_and_get+0xe0/0x1d0 [ib_register_device+0x53c/0x63 0 [ib_core] ? srso_alias_return_thunk+0x5/0xfbef5 bnxt_re_probe+0xbd8/0xe50 [bnxt_re] ? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re] sonda_bus_auxiliar+0x49/0x80 ? driver_sysfs_add+0x57/0xc0 realmente_probe+0xde/0x340? pm_runtime_barrier+0x54/0x90? __pfx___driver_attach+0x10/0x10 __driver_probe_device+0x78/0x110 driver_probe_device+0x1f/0xa0 __driver_attach+0xba/0x1c0 bus_for_each_dev+0x8f/0xe0 bus_add_driver+0x146/0x220 driver_register+0x72/ 0xd0 __auxiliary_driver_register+0x6e/0xd0 ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re] bnxt_re_mod_init+0x3e/0xff0 [bnxt_re] ? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re] do_one_initcall+0x5b/0x310 do_init_module+0x90/0x250 init_module_from_file+0x86/0xc0 idempotent_init_module+0x121/0x2b0 __x64_sys_finit _module+0x5e/0xb0 do_syscall_64+0x82/0x160 ? srso_alias_return_thunk+0x5/0xfbef5? syscall_exit_to_user_mode_prepare+0x149/0x170? srso_alias_return_thunk+0x5/0xfbef5? syscall_exit_to_user_mode+0x75/0x230? srso_alias_return_thunk+0x5/0xfbef5? do_syscall_64+0x8e/0x160? srso_alias_return_thunk+0x5/0xfbef5? __count_memcg_events+0x69/0x100? srso_alias_return_thunk+0x5/0xfbef5? count_memcg_events.constprop.0+0x1a/0x30? srso_alias_return_thunk+0x5/0xfbef5? handle_mm_fault+0x1f0/0x300? srso_alias_return_thunk+0x5/0xfbef5? do_user_addr_fault+0x34e/0x640? srso_alias_return_thunk+0x5/0xfbef5? srso_alias_return_thunk+0x5/0xfbef5 Entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f4e5132821d C\u00f3digo: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 9 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 &lt;48&gt; 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 IG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d RDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b RBP: 00007ffca9c90760 R08: 00007f4e513f6b20 00007ffca9c906f0 R10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d R13: 0000000000020000 R14: 0000563ec8409e90 R15: 0563ec8a8fa60 ---[ finalizar rastreo ] ---"}], "id": "CVE-2024-38540", "lastModified": "2026-06-17T07:40:30.030", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-38540", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-24T15:37:42.492444Z", "version": "2.0.3"}}]}, "published": "2024-06-19T14:15:14.290", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/66a9937187ac9b5c5ffff07b8b284483e56804d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/84d2f29152184f0d72ed7c9648c4ee6927df4e59"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/627493443f3a8458cb55cdae1da254a7001123bc"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/78cfd17142ef70599d6409cbd709d94b3da58659"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8b799c00cea6fcfe5b501bbaeb228c8821acb753"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a658f011d89dd20cf2c7cb4760ffd79201700b98"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2024:8870", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.27.1.rt7.368.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-05T00:00:00Z"}, {"advisory": "RHSA-2024:8856", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.27.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-11-05T00:00:00Z"}, {"advisory": "RHSA-2024:6297", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.121.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6297", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.121.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6297", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.121.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6206", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.70.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-09-03T00:00:00Z"}, {"advisory": "RHSA-2024:5928", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.33.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-28T00:00:00Z"}, {"advisory": "RHSA-2024:5928", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.33.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-28T00:00:00Z"}, {"advisory": "RHSA-2024:6267", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.82.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6268", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.82.1.rt14.367.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}], "bugzilla": {"description": "kernel: bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq", "id": "2293459", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2293459"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq\nUndefined behavior is triggered when bnxt_qplib_alloc_init_hwq is called\nwith hwq_attr->aux_depth != 0 and hwq_attr->aux_stride == 0.\nIn that case, \"roundup_pow_of_two(hwq_attr->aux_stride)\" gets called.\nroundup_pow_of_two is documented as undefined for 0.\nFix it in the one caller that had this combination.\nThe undefined behavior was detected by UBSAN:\nUBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\nshift exponent 64 is too large for 64-bit type 'long unsigned int'\nCPU: 24 PID: 1075 Comm: (udev-worker) Not tainted 6.9.0-rc6+ #4\nHardware name: Abacus electric, s.r.o. - servis@abacus.cz Super Server/H12SSW-iN, BIOS 2.7 10/25/2023\nCall Trace:\n<TASK>\ndump_stack_lvl+0x5d/0x80\nubsan_epilogue+0x5/0x30\n__ubsan_handle_shift_out_of_bounds.cold+0x61/0xec\n__roundup_pow_of_two+0x25/0x35 [bnxt_re]\nbnxt_qplib_alloc_init_hwq+0xa1/0x470 [bnxt_re]\nbnxt_qplib_create_qp+0x19e/0x840 [bnxt_re]\nbnxt_re_create_qp+0x9b1/0xcd0 [bnxt_re]\n? srso_alias_return_thunk+0x5/0xfbef5\n? srso_alias_return_thunk+0x5/0xfbef5\n? __kmalloc+0x1b6/0x4f0\n? create_qp.part.0+0x128/0x1c0 [ib_core]\n? __pfx_bnxt_re_create_qp+0x10/0x10 [bnxt_re]\ncreate_qp.part.0+0x128/0x1c0 [ib_core]\nib_create_qp_kernel+0x50/0xd0 [ib_core]\ncreate_mad_qp+0x8e/0xe0 [ib_core]\n? __pfx_qp_event_handler+0x10/0x10 [ib_core]\nib_mad_init_device+0x2be/0x680 [ib_core]\nadd_client_context+0x10d/0x1a0 [ib_core]\nenable_device_and_get+0xe0/0x1d0 [ib_core]\nib_register_device+0x53c/0x630 [ib_core]\n? srso_alias_return_thunk+0x5/0xfbef5\nbnxt_re_probe+0xbd8/0xe50 [bnxt_re]\n? __pfx_bnxt_re_probe+0x10/0x10 [bnxt_re]\nauxiliary_bus_probe+0x49/0x80\n? driver_sysfs_add+0x57/0xc0\nreally_probe+0xde/0x340\n? pm_runtime_barrier+0x54/0x90\n? __pfx___driver_attach+0x10/0x10\n__driver_probe_device+0x78/0x110\ndriver_probe_device+0x1f/0xa0\n__driver_attach+0xba/0x1c0\nbus_for_each_dev+0x8f/0xe0\nbus_add_driver+0x146/0x220\ndriver_register+0x72/0xd0\n__auxiliary_driver_register+0x6e/0xd0\n? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\nbnxt_re_mod_init+0x3e/0xff0 [bnxt_re]\n? __pfx_bnxt_re_mod_init+0x10/0x10 [bnxt_re]\ndo_one_initcall+0x5b/0x310\ndo_init_module+0x90/0x250\ninit_module_from_file+0x86/0xc0\nidempotent_init_module+0x121/0x2b0\n__x64_sys_finit_module+0x5e/0xb0\ndo_syscall_64+0x82/0x160\n? srso_alias_return_thunk+0x5/0xfbef5\n? syscall_exit_to_user_mode_prepare+0x149/0x170\n? srso_alias_return_thunk+0x5/0xfbef5\n? syscall_exit_to_user_mode+0x75/0x230\n? srso_alias_return_thunk+0x5/0xfbef5\n? do_syscall_64+0x8e/0x160\n? srso_alias_return_thunk+0x5/0xfbef5\n? __count_memcg_events+0x69/0x100\n? srso_alias_return_thunk+0x5/0xfbef5\n? count_memcg_events.constprop.0+0x1a/0x30\n? srso_alias_return_thunk+0x5/0xfbef5\n? handle_mm_fault+0x1f0/0x300\n? srso_alias_return_thunk+0x5/0xfbef5\n? do_user_addr_fault+0x34e/0x640\n? srso_alias_return_thunk+0x5/0xfbef5\n? srso_alias_return_thunk+0x5/0xfbef5\nentry_SYSCALL_64_after_hwframe+0x76/0x7e\nRIP: 0033:0x7f4e5132821d\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e3 db 0c 00 f7 d8 64 89 01 48\nRSP: 002b:00007ffca9c906a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139\nRAX: ffffffffffffffda RBX: 0000563ec8a8f130 RCX: 00007f4e5132821d\nRDX: 0000000000000000 RSI: 00007f4e518fa07d RDI: 000000000000003b\nRBP: 00007ffca9c90760 R08: 00007f4e513f6b20 R09: 00007ffca9c906f0\nR10: 0000563ec8a8faa0 R11: 0000000000000246 R12: 00007f4e518fa07d\nR13: 0000000000020000 R14: 0000563ec8409e90 R15: 0000563ec8a8fa60\n</TASK>\n---[ end trace ]---"], "name": "CVE-2024-38540", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-06-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-38540\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-38540\nhttps://lore.kernel.org/linux-cve-announce/2024061947-CVE-2024-38540-1d0a@gregkh/T"], "threat_severity": "Moderate"}

{}