CVE-2021-47100

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47100", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-29T22:33:44.301Z", "datePublished": "2024-03-04T18:10:52.602Z", "dateUpdated": "2026-05-11T13:48:03.873Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T13:48:03.873Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\n\nHi,\n\nWhen testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,\nthe system crashed.\n\nThe log as follows:\n[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a\n[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0\n[ 141.087464] Oops: 0010 [#1] SMP NOPTI\n[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47\n[ 141.088009] Workqueue: events 0xffffffffc09b3a40\n[ 141.088009] RIP: 0010:0xffffffffc09b3a5a\n[ 141.088009] Code: Bad RIP value.\n[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246\n[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000\n[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1\n[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700\n[ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8\n[ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000\n[ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0\n[ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 141.088009] PKRU: 55555554\n[ 141.088009] Call Trace:\n[ 141.088009] ? process_one_work+0x195/0x390\n[ 141.088009] ? worker_thread+0x30/0x390\n[ 141.088009] ? process_one_work+0x390/0x390\n[ 141.088009] ? kthread+0x10d/0x130\n[ 141.088009] ? kthread_flush_work_fn+0x10/0x10\n[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a\n[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0\n[ 200.223464] Oops: 0010 [#1] SMP NOPTI\n[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46\n[ 200.224008] Workqueue: events 0xffffffffc0b28a40\n[ 200.224008] RIP: 0010:0xffffffffc0b28a5a\n[ 200.224008] Code: Bad RIP value.\n[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246\n[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000\n[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5\n[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700\n[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8\n[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000\n[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0\n[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 200.224008] PKRU: 55555554\n[ 200.224008] Call Trace:\n[ 200.224008] ? process_one_work+0x195/0x390\n[ 200.224008] ? worker_thread+0x30/0x390\n[ 200.224008] ? process_one_work+0x390/0x390\n[ 200.224008] ? kthread+0x10d/0x130\n[ 200.224008] ? kthread_flush_work_fn+0x10/0x10\n[ 200.224008] ? ret_from_fork+0x35/0x40\n[ 200.224008] kernel fault(0x1) notification starting on CPU 63\n[ 200.224008] kernel fault(0x1) notification finished on CPU 63\n[ 200.224008] CR2: ffffffffc0b28a5a\n[ 200.224008] ---[ end trace c82a412d93f57412 ]---\n\nThe reason is as follows:\nT1: rmmod ipmi_si.\n ->ipmi_unregister_smi()\n -> ipmi_bmc_unregister()\n -> __ipmi_bmc_unregister()\n -> kref_put(&bmc->usecount, cleanup_bmc_device);\n -> schedule_work(&bmc->remove_work);\n\nT2: rmmod ipmi_msghandl\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/char/ipmi/ipmi_msghandler.c"], "versions": [{"version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "925229d552724e1bba1abf01d3a0b1318539b012", "status": "affected", "versionType": "git"}, {"version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "992649b8b16843d27eb39ceea5f9cf85ffb50a18", "status": "affected", "versionType": "git"}, {"version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "6809da5185141e61401da5b01896b79a4deed1ad", "status": "affected", "versionType": "git"}, {"version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "6b3f7e4b10f343f05b5fb513b07a9168fbf1172e", "status": "affected", "versionType": "git"}, {"version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "ffb76a86f8096a8206be03b14adda6092e18e275", "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/char/ipmi/ipmi_msghandler.c"], "versions": [{"version": "4.15", "status": "affected"}, {"version": "0", "lessThan": "4.15", "status": "unaffected", "versionType": "semver"}, {"version": "4.19.223", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.169", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.89", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.12", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16", "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": "4.15", "versionEndExcluding": "4.19.223"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.4.169"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.10.89"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.15.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "5.16"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012"}, {"url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18"}, {"url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad"}, {"url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e"}, {"url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275"}], "title": "ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-06-26T20:38:38.889138Z", "id": "CVE-2021-47100", "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": "2024-06-26T20:38:49.099Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.796Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:24:39.796Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47100", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-06-26T20:38:38.889138Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-06-26T20:38:44.175Z"}}], "cna": {"title": "ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "925229d552724e1bba1abf01d3a0b1318539b012", "versionType": "git"}, {"status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "992649b8b16843d27eb39ceea5f9cf85ffb50a18", "versionType": "git"}, {"status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "6809da5185141e61401da5b01896b79a4deed1ad", "versionType": "git"}, {"status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "6b3f7e4b10f343f05b5fb513b07a9168fbf1172e", "versionType": "git"}, {"status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "lessThan": "ffb76a86f8096a8206be03b14adda6092e18e275", "versionType": "git"}], "programFiles": ["drivers/char/ipmi/ipmi_msghandler.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"status": "unaffected", "version": "0", "lessThan": "4.15", "versionType": "semver"}, {"status": "unaffected", "version": "4.19.223", "versionType": "semver", "lessThanOrEqual": "4.19.*"}, {"status": "unaffected", "version": "5.4.169", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.89", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.12", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.16", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/char/ipmi/ipmi_msghandler.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012"}, {"url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18"}, {"url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad"}, {"url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e"}, {"url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\n\nHi,\n\nWhen testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,\nthe system crashed.\n\nThe log as follows:\n[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a\n[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0\n[ 141.087464] Oops: 0010 [#1] SMP NOPTI\n[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47\n[ 141.088009] Workqueue: events 0xffffffffc09b3a40\n[ 141.088009] RIP: 0010:0xffffffffc09b3a5a\n[ 141.088009] Code: Bad RIP value.\n[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246\n[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000\n[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1\n[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700\n[ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8\n[ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000\n[ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0\n[ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 141.088009] PKRU: 55555554\n[ 141.088009] Call Trace:\n[ 141.088009] ? process_one_work+0x195/0x390\n[ 141.088009] ? worker_thread+0x30/0x390\n[ 141.088009] ? process_one_work+0x390/0x390\n[ 141.088009] ? kthread+0x10d/0x130\n[ 141.088009] ? kthread_flush_work_fn+0x10/0x10\n[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a\n[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0\n[ 200.223464] Oops: 0010 [#1] SMP NOPTI\n[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46\n[ 200.224008] Workqueue: events 0xffffffffc0b28a40\n[ 200.224008] RIP: 0010:0xffffffffc0b28a5a\n[ 200.224008] Code: Bad RIP value.\n[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246\n[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000\n[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5\n[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700\n[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8\n[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000\n[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0\n[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 200.224008] PKRU: 55555554\n[ 200.224008] Call Trace:\n[ 200.224008] ? process_one_work+0x195/0x390\n[ 200.224008] ? worker_thread+0x30/0x390\n[ 200.224008] ? process_one_work+0x390/0x390\n[ 200.224008] ? kthread+0x10d/0x130\n[ 200.224008] ? kthread_flush_work_fn+0x10/0x10\n[ 200.224008] ? ret_from_fork+0x35/0x40\n[ 200.224008] kernel fault(0x1) notification starting on CPU 63\n[ 200.224008] kernel fault(0x1) notification finished on CPU 63\n[ 200.224008] CR2: ffffffffc0b28a5a\n[ 200.224008] ---[ end trace c82a412d93f57412 ]---\n\nThe reason is as follows:\nT1: rmmod ipmi_si.\n ->ipmi_unregister_smi()\n -> ipmi_bmc_unregister()\n -> __ipmi_bmc_unregister()\n -> kref_put(&bmc->usecount, cleanup_bmc_device);\n -> schedule_work(&bmc->remove_work);\n\nT2: rmmod ipmi_msghandl\n---truncated---"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "4.19.223", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.169", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.89", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.12", "versionStartIncluding": "4.15"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16", "versionStartIncluding": "4.15"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:04:10.477Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47100", "state": "PUBLISHED", "dateUpdated": "2025-05-04T07:04:10.477Z", "dateReserved": "2024-02-29T22:33:44.301Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-03-04T18:10:52.602Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/char/ipmi/ipmi_msghandler.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "925229d552724e1bba1abf01d3a0b1318539b012", "status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "versionType": "git"}, {"lessThan": "992649b8b16843d27eb39ceea5f9cf85ffb50a18", "status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "versionType": "git"}, {"lessThan": "6809da5185141e61401da5b01896b79a4deed1ad", "status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "versionType": "git"}, {"lessThan": "6b3f7e4b10f343f05b5fb513b07a9168fbf1172e", "status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "versionType": "git"}, {"lessThan": "ffb76a86f8096a8206be03b14adda6092e18e275", "status": "affected", "version": "b2cfd8ab4add53c2070367bfee2f5b738f51698d", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/char/ipmi/ipmi_msghandler.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"lessThan": "4.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "4.19.*", "status": "unaffected", "version": "4.19.223", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.169", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.89", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.16", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "5C88C05D-FA25-4086-A781-7092BAF56D64", "versionEndExcluding": "4.19.223", "versionStartIncluding": "4.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BDD2EE60-3484-4845-AC26-6AB31C278192", "versionEndExcluding": "5.4.169", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A2152BA-053D-4847-B29B-68F543546AB3", "versionEndExcluding": "5.10.89", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "732BA914-7B3B-43CD-857F-8119106F6F71", "versionEndExcluding": "5.15.12", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*", "matchCriteriaId": "357AA433-37E8-4323-BFB2-3038D6E4B414", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*", "matchCriteriaId": "A73429BA-C2D9-4D0C-A75F-06A1CA8B3983", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*", "matchCriteriaId": "F621B5E3-E99D-49E7-90B9-EC3B77C95383", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*", "matchCriteriaId": "F7BFDCAA-1650-49AA-8462-407DD593F94F", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:*", "matchCriteriaId": "6EC9882F-866D-4ACB-8FBC-213D8D8436C8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc6:*:*:*:*:*:*", "matchCriteriaId": "8A0915FE-A4AA-4C94-B783-CF29D81E7E54", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\n\nHi,\n\nWhen testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,\nthe system crashed.\n\nThe log as follows:\n[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a\n[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0\n[ 141.087464] Oops: 0010 [#1] SMP NOPTI\n[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47\n[ 141.088009] Workqueue: events 0xffffffffc09b3a40\n[ 141.088009] RIP: 0010:0xffffffffc09b3a5a\n[ 141.088009] Code: Bad RIP value.\n[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246\n[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000\n[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1\n[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700\n[ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8\n[ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000\n[ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0\n[ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 141.088009] PKRU: 55555554\n[ 141.088009] Call Trace:\n[ 141.088009] ? process_one_work+0x195/0x390\n[ 141.088009] ? worker_thread+0x30/0x390\n[ 141.088009] ? process_one_work+0x390/0x390\n[ 141.088009] ? kthread+0x10d/0x130\n[ 141.088009] ? kthread_flush_work_fn+0x10/0x10\n[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a\n[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0\n[ 200.223464] Oops: 0010 [#1] SMP NOPTI\n[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46\n[ 200.224008] Workqueue: events 0xffffffffc0b28a40\n[ 200.224008] RIP: 0010:0xffffffffc0b28a5a\n[ 200.224008] Code: Bad RIP value.\n[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246\n[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000\n[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5\n[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700\n[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8\n[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000\n[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0\n[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 200.224008] PKRU: 55555554\n[ 200.224008] Call Trace:\n[ 200.224008] ? process_one_work+0x195/0x390\n[ 200.224008] ? worker_thread+0x30/0x390\n[ 200.224008] ? process_one_work+0x390/0x390\n[ 200.224008] ? kthread+0x10d/0x130\n[ 200.224008] ? kthread_flush_work_fn+0x10/0x10\n[ 200.224008] ? ret_from_fork+0x35/0x40\n[ 200.224008] kernel fault(0x1) notification starting on CPU 63\n[ 200.224008] kernel fault(0x1) notification finished on CPU 63\n[ 200.224008] CR2: ffffffffc0b28a5a\n[ 200.224008] ---[ end trace c82a412d93f57412 ]---\n\nThe reason is as follows:\nT1: rmmod ipmi_si.\n ->ipmi_unregister_smi()\n -> ipmi_bmc_unregister()\n -> __ipmi_bmc_unregister()\n -> kref_put(&bmc->usecount, cleanup_bmc_device);\n -> schedule_work(&bmc->remove_work);\n\nT2: rmmod ipmi_msghandl\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: ipmi: corrige UAF al desinstalar los m\u00f3dulos ipmi_si e ipmi_msghandler Hola. Al probar la instalaci\u00f3n y desinstalaci\u00f3n de ipmi_si.ko e ipmi_msghandler.ko, el sistema fall\u00f3. El registro es el siguiente: [141.087026] ERROR: no se puede manejar la solicitud de paginaci\u00f3n del kernel en ffffffffc09b3a5a [141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0 [141.087464] Vaya s: 0010 [#1] SMP NOPTI [ 141.087580] CPU: 67 PID : 668 Comm: kworker/67:1 Kdump: cargado No contaminado 4.18.0.x86_64 #47 [ 141.088009] Cola de trabajo: eventos 0xffffffffc09b3a40 [ 141.088009] RIP: 0010:0xffffffffc09b3a5a [ 141.088009] C\u00f3digo: Valor RIP incorrecto. [ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246 [ 141.088009] RAX: 00000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000 [ 14 1.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 [ 141.088009] RBP: 000000000000000000 R08: ffff9abfffee3cb8 R09: 00 000000000002e1 [141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700 [ 141.088009] R13: 00000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8 [ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000 [ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0 [ 141.088009] DR0: 00000000000000 00 DR1: 0000000000000000 DR2: 00000000000000000 [ 141.088009] DR3: 0000000000000000 DR6: 00000000ffe0ff0 DR7: 0000000000000400 [ 141.088009] PKRU: 55555554 [ 141.088009] Llamar Seguimiento: [141.088009]? proceso_one_work+0x195/0x390 [141.088009]? hilo_trabajador+0x30/0x390 [141.088009]? proceso_one_work+0x390/0x390 [141.088009]? kthread+0x10d/0x130 [141.088009]? kthread_flush_work_fn+0x10/0x10 [141.088009]? ret_from_fork+0x35/0x40] ERROR: no se puede manejar la solicitud de paginaci\u00f3n del kernel en ffffffffc0b28a5a [200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0 [200.223464] Vaya : 0010 [#1] SMP NOPTI [ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: cargado No contaminado 4.18.0.x86_64 #46 [200.224008] Cola de trabajo: eventos 0xffffffffc0b28a40 [200.224008] RIP: 0010:0xffffffffc0b28a5a [200.224008] C\u00f3digo: RIP incorrecto valor. [ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246 [ 200.224008] RAX: 00000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000 [ 200 .224008] RDX: 0000000000000000 RSI: 00000000000000246 RDI: 0000000000000246 [ 200.224008] RBP: 00000000000000000 R08: ffff9fe43fde3cb8 R09: 00 000000000000d5 [200.224008] R10: fffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700 [ 200.224008] R13: 00000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8 [ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:00000000000000000 [ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0 [ 200.224008] DR0: 00000000000000 00 DR1: 0000000000000000 DR2: 00000000000000000 [ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 200.224008] PKRU: 55555554 [ 200.224008] Llamar Seguimiento: [200.224008] ? proceso_one_work+0x195/0x390 [200.224008]? hilo_trabajador+0x30/0x390 [200.224008]? proceso_one_work+0x390/0x390 [200.224008]? kthread+0x10d/0x130 [200.224008]? kthread_flush_work_fn+0x10/0x10 [200.224008]? ret_from_fork+0x35/0x40 [200.224008] Notificaci\u00f3n de falla del kernel (0x1) que comienza en la CPU 63 [200.224008] Notificaci\u00f3n de falla del kernel (0x1) finalizada en la CPU 63 [200.224008] CR2: ffffffffc0b28a5a [200.224008] ---[ end trace c82a41 2d93f57412 ]-- - El motivo es el siguiente: T1: rmmod ipmi_si. ->ipmi_unregister_smi() -> ipmi_bmc_unregister() -> __ipmi_bmc_unregister() -> kref_put(&bmc->usecount, cleanup_bmc_device); -> programar_trabajo(&bmc->remove_work); T2: rmmod ipmi_msghandl"}], "id": "CVE-2021-47100", "lastModified": "2026-06-17T04:16:28.860", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47100", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-26T20:38:38.889138Z", "version": "2.0.3"}}]}, "published": "2024-03-04T18:15:08.267", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6809da5185141e61401da5b01896b79a4deed1ad"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6b3f7e4b10f343f05b5fb513b07a9168fbf1172e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/925229d552724e1bba1abf01d3a0b1318539b012"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/992649b8b16843d27eb39ceea5f9cf85ffb50a18"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ffb76a86f8096a8206be03b14adda6092e18e275"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module", "id": "2267918", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2267918"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module\nHi,\nWhen testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko,\nthe system crashed.\nThe log as follows:\n[ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a\n[ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0\n[ 141.087464] Oops: 0010 [#1] SMP NOPTI\n[ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47\n[ 141.088009] Workqueue: events 0xffffffffc09b3a40\n[ 141.088009] RIP: 0010:0xffffffffc09b3a5a\n[ 141.088009] Code: Bad RIP value.\n[ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246\n[ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000\n[ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1\n[ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700\n[ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8\n[ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000\n[ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0\n[ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 141.088009] PKRU: 55555554\n[ 141.088009] Call Trace:\n[ 141.088009] ? process_one_work+0x195/0x390\n[ 141.088009] ? worker_thread+0x30/0x390\n[ 141.088009] ? process_one_work+0x390/0x390\n[ 141.088009] ? kthread+0x10d/0x130\n[ 141.088009] ? kthread_flush_work_fn+0x10/0x10\n[ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a\n[ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0\n[ 200.223464] Oops: 0010 [#1] SMP NOPTI\n[ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46\n[ 200.224008] Workqueue: events 0xffffffffc0b28a40\n[ 200.224008] RIP: 0010:0xffffffffc0b28a5a\n[ 200.224008] Code: Bad RIP value.\n[ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246\n[ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000\n[ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246\n[ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5\n[ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700\n[ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8\n[ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000\n[ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0\n[ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 200.224008] PKRU: 55555554\n[ 200.224008] Call Trace:\n[ 200.224008] ? process_one_work+0x195/0x390\n[ 200.224008] ? worker_thread+0x30/0x390\n[ 200.224008] ? process_one_work+0x390/0x390\n[ 200.224008] ? kthread+0x10d/0x130\n[ 200.224008] ? kthread_flush_work_fn+0x10/0x10\n[ 200.224008] ? ret_from_fork+0x35/0x40\n[ 200.224008] kernel fault(0x1) notification starting on CPU 63\n[ 200.224008] kernel fault(0x1) notification finished on CPU 63\n[ 200.224008] CR2: ffffffffc0b28a5a\n[ 200.224008] ---[ end trace c82a412d93f57412 ]---\nThe reason is as follows:\nT1: rmmod ipmi_si.\n->ipmi_unregister_smi()\n-> ipmi_bmc_unregister()\n-> __ipmi_bmc_unregister()\n-> kref_put(&bmc->usecount, cleanup_bmc_device);\n-> schedule_work(&bmc->remove_work);\nT2: rmmod ipmi_msghandl\n---truncated---"], "name": "CVE-2021-47100", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-03-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47100\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47100\nhttps://lore.kernel.org/linux-cve-announce/2024030415-CVE-2021-47100-043d@gregkh/T"], "threat_severity": "Moderate"}

{}