CVE-2023-54237

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-54237", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:44.508Z", "datePublished": "2025-12-30T12:11:27.028Z", "dateUpdated": "2026-10-15T21:41:42.738Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-14T11:57:41.872Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()\n\nThere is a certain chance to trigger the following panic:\n\nPID: 5900 TASK: ffff88c1c8af4100 CPU: 1 COMMAND: \"kworker/1:48\"\n #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7\n #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a\n #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60\n #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7\n #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715\n #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654\n #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62\n [exception RIP: ib_alloc_mr+19]\n RIP: ffffffffc0c9cce3 RSP: ffff9456c1cc7c38 RFLAGS: 00010202\n RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000004\n RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffff88c1ea281d00 R8: 000000020a34ffff R9: ffff88c1350bbb20\n R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000\n R13: 0000000000000010 R14: ffff88c1ab040a50 R15: ffff88c1ea281d00\n ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018\n #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc]\n #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc]\n #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc]\n\nThe reason here is that when the server tries to create a second link,\nsmc_llc_srv_add_link() has no protection and may add a new link to\nlink group. This breaks the security environment protected by\nllc_conf_mutex."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable window is entered only from the SMC-R server listen worker (`smc_listen_work` \u2192 `smc_listen_rdma_finish` \u2192 `smcr_serv_conf_first_link`) in response to an inbound remote connection, and the racing LLC messages (ADD_LINK/DELETE_LINK) arrive from the remote peer over the RoCE fabric. SMC-Rv2/RoCEv2 traffic is IP-routable and the CLC handshake is plain TCP, so a remote peer reaches this code.\nAC:L - The attacker controls both sides of the race \u2014 it initiates the first-contact connection that enters the unprotected `smc_llc_srv_add_link()` window, and independently drives the concurrent `llc_conf_mutex` holders (parallel connections into the same link group doing `smcr_buf_map_usable_links()`, peer-sent DELETE_LINK, or induced link-down), with unlimited retries.\nPR:N - SMC has no authentication at any point in the CLC or LLC handshake; any peer able to complete an SMC-negotiated TCP connection to the listening socket reaches this code path pre-authentication.\nUI:N - The listen worker processes inbound SMC connections automatically with no action from any local user; the whole flow runs in kernel workqueue context.\nS:U - The corruption is confined to kernel link-group and RDMA resource state within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Unsynchronized `smcr_link_init()`/`smcr_link_clear()` against `smcr_buf_map_usable_links()` yields use of freed/zeroed `ib_pd`, `ib_qp` and WR buffers and MRs registered against torn-down protection domains, memory corruption that can be leveraged to disclose kernel and RDMA buffer contents.\nI:H - Concurrent `smcr_link_clear()` on the same link is unguarded (`lnk->clearing` is a non-atomic bitfield), producing double `smc_ib_dealloc_protection_domain()`/`smc_ib_destroy_queue_pair()`/` smc_wr_free_link()` and a `memset()` of a live `struct smc_link` \u2014 double-free/use-after-free primitives usable for arbitrary write and control-flow hijack.\nA:H - The commit documents a reproducible kernel panic \u2014 page fault in `ib_alloc_mr()` with a NULL protection domain from `__smc_buf_create` \u2192 `smcr_buf_map_link` \u2192 `smc_ib_get_memory_region` \u2014 and the double-free paths crash the kernel as well."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/smc/af_smc.c"], "versions": [{"version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "fe35c24b730d38b421da93ac5d493cb4495e8e54", "status": "affected", "versionType": "git"}, {"version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "f2f46de98c11d41ac8d22765f47ba54ce5480a5b", "status": "affected", "versionType": "git"}, {"version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "0c764cc271d3aa6528ae1b3394babf34ac01f775", "status": "affected", "versionType": "git"}, {"version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "e40b801b3603a8f90b46acbacdea3505c27f01c0", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/smc/af_smc.c"], "versions": [{"version": "5.8", "status": "affected"}, {"version": "0", "lessThan": "5.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.270", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.16", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.2.3", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.3", "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": "5.8", "versionEndExcluding": "5.10.270"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.1.16"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.2.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.8", "versionEndExcluding": "6.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fe35c24b730d38b421da93ac5d493cb4495e8e54"}, {"url": "https://git.kernel.org/stable/c/f2f46de98c11d41ac8d22765f47ba54ce5480a5b"}, {"url": "https://git.kernel.org/stable/c/0c764cc271d3aa6528ae1b3394babf34ac01f775"}, {"url": "https://git.kernel.org/stable/c/e40b801b3603a8f90b46acbacdea3505c27f01c0"}], "title": "net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-54237", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:39:39.742228Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:41:42.738Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-54237", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T21:39:39.742228Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T21:39:40.586Z"}}], "cna": {"title": "net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 9.8, "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - The vulnerable window is entered only from the SMC-R server listen worker (`smc_listen_work` \u2192 `smc_listen_rdma_finish` \u2192 `smcr_serv_conf_first_link`) in response to an inbound remote connection, and the racing LLC messages (ADD_LINK/DELETE_LINK) arrive from the remote peer over the RoCE fabric. SMC-Rv2/RoCEv2 traffic is IP-routable and the CLC handshake is plain TCP, so a remote peer reaches this code.\nAC:L - The attacker controls both sides of the race \u2014 it initiates the first-contact connection that enters the unprotected `smc_llc_srv_add_link()` window, and independently drives the concurrent `llc_conf_mutex` holders (parallel connections into the same link group doing `smcr_buf_map_usable_links()`, peer-sent DELETE_LINK, or induced link-down), with unlimited retries.\nPR:N - SMC has no authentication at any point in the CLC or LLC handshake; any peer able to complete an SMC-negotiated TCP connection to the listening socket reaches this code path pre-authentication.\nUI:N - The listen worker processes inbound SMC connections automatically with no action from any local user; the whole flow runs in kernel workqueue context.\nS:U - The corruption is confined to kernel link-group and RDMA resource state within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - Unsynchronized `smcr_link_init()`/`smcr_link_clear()` against `smcr_buf_map_usable_links()` yields use of freed/zeroed `ib_pd`, `ib_qp` and WR buffers and MRs registered against torn-down protection domains, memory corruption that can be leveraged to disclose kernel and RDMA buffer contents.\nI:H - Concurrent `smcr_link_clear()` on the same link is unguarded (`lnk->clearing` is a non-atomic bitfield), producing double `smc_ib_dealloc_protection_domain()`/`smc_ib_destroy_queue_pair()`/` smc_wr_free_link()` and a `memset()` of a live `struct smc_link` \u2014 double-free/use-after-free primitives usable for arbitrary write and control-flow hijack.\nA:H - The commit documents a reproducible kernel panic \u2014 page fault in `ib_alloc_mr()` with a NULL protection domain from `__smc_buf_create` \u2192 `smcr_buf_map_link` \u2192 `smc_ib_get_memory_region` \u2014 and the double-free paths crash the kernel as well."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "fe35c24b730d38b421da93ac5d493cb4495e8e54", "versionType": "git"}, {"status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "f2f46de98c11d41ac8d22765f47ba54ce5480a5b", "versionType": "git"}, {"status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "0c764cc271d3aa6528ae1b3394babf34ac01f775", "versionType": "git"}, {"status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "lessThan": "e40b801b3603a8f90b46acbacdea3505c27f01c0", "versionType": "git"}], "programFiles": ["net/smc/af_smc.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"status": "unaffected", "version": "0", "lessThan": "5.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.270", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "6.1.16", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.2.3", "versionType": "semver", "lessThanOrEqual": "6.2.*"}, {"status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/smc/af_smc.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/fe35c24b730d38b421da93ac5d493cb4495e8e54"}, {"url": "https://git.kernel.org/stable/c/f2f46de98c11d41ac8d22765f47ba54ce5480a5b"}, {"url": "https://git.kernel.org/stable/c/0c764cc271d3aa6528ae1b3394babf34ac01f775"}, {"url": "https://git.kernel.org/stable/c/e40b801b3603a8f90b46acbacdea3505c27f01c0"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()\n\nThere is a certain chance to trigger the following panic:\n\nPID: 5900 TASK: ffff88c1c8af4100 CPU: 1 COMMAND: \"kworker/1:48\"\n #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7\n #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a\n #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60\n #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7\n #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715\n #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654\n #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62\n [exception RIP: ib_alloc_mr+19]\n RIP: ffffffffc0c9cce3 RSP: ffff9456c1cc7c38 RFLAGS: 00010202\n RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000004\n RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffff88c1ea281d00 R8: 000000020a34ffff R9: ffff88c1350bbb20\n R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000\n R13: 0000000000000010 R14: ffff88c1ab040a50 R15: ffff88c1ea281d00\n ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018\n #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc]\n #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc]\n #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc]\n\nThe reason here is that when the server tries to create a second link,\nsmc_llc_srv_add_link() has no protection and may add a new link to\nlink group. This breaks the security environment protected by\nllc_conf_mutex."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.270", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.16", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.2.3", "versionStartIncluding": "5.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.3", "versionStartIncluding": "5.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-14T11:57:41.872Z"}}}, "cveMetadata": {"cveId": "CVE-2023-54237", "state": "PUBLISHED", "dateUpdated": "2026-10-15T21:41:42.738Z", "dateReserved": "2025-12-30T12:06:44.508Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-12-30T12:11:27.028Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/smc/af_smc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fe35c24b730d38b421da93ac5d493cb4495e8e54", "status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "versionType": "git"}, {"lessThan": "f2f46de98c11d41ac8d22765f47ba54ce5480a5b", "status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "versionType": "git"}, {"lessThan": "0c764cc271d3aa6528ae1b3394babf34ac01f775", "status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "versionType": "git"}, {"lessThan": "e40b801b3603a8f90b46acbacdea3505c27f01c0", "status": "affected", "version": "2d2209f2018943d4152a21eff5b76f1952e0b435", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/smc/af_smc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.8"}, {"lessThan": "5.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.270", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.16", "versionType": "semver"}, {"lessThanOrEqual": "6.2.*", "status": "unaffected", "version": "6.2.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()\n\nThere is a certain chance to trigger the following panic:\n\nPID: 5900 TASK: ffff88c1c8af4100 CPU: 1 COMMAND: \"kworker/1:48\"\n #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7\n #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a\n #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60\n #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7\n #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715\n #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654\n #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62\n [exception RIP: ib_alloc_mr+19]\n RIP: ffffffffc0c9cce3 RSP: ffff9456c1cc7c38 RFLAGS: 00010202\n RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000004\n RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffff88c1ea281d00 R8: 000000020a34ffff R9: ffff88c1350bbb20\n R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000\n R13: 0000000000000010 R14: ffff88c1ab040a50 R15: ffff88c1ea281d00\n ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018\n #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc]\n #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc]\n #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc]\n\nThe reason here is that when the server tries to create a second link,\nsmc_llc_srv_add_link() has no protection and may add a new link to\nlink group. This breaks the security environment protected by\nllc_conf_mutex."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet/smc: corrige un p\u00e1nico potencial debido a smc_llc_srv_add_link() sin protecci\u00f3n\n\nExiste una cierta probabilidad de desencadenar el siguiente p\u00e1nico:\n\nPID: 5900 TASK: ffff88c1c8af4100 CPU: 1 COMMAND: \"kworker/1:48\"\n #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7\n #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a\n #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60\n #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7\n #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715\n #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654\n #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62\n [exception RIP: ib_alloc_mr+19]\n RIP: ffffffffc0c9cce3 RSP: ffff9456c1cc7c38 RFLAGS: 00010202\n RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000004\n RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: ffff88c1ea281d00 R8: 000000020a34ffff R9: ffff88c1350bbb20\n R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000\n R13: 0000000000000010 R14: ffff88c1ab040a50 R15: ffff88c1ea281d00\n ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018\n #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc]\n #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc]\n #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc]\n\nLa raz\u00f3n aqu\u00ed es que cuando el servidor intenta crear un segundo enlace, smc_llc_srv_add_link() no tiene protecci\u00f3n y puede a\u00f1adir un nuevo enlace al grupo de enlaces. Esto rompe el entorno de seguridad protegido por llc_conf_mutex."}], "id": "CVE-2023-54237", "lastModified": "2026-10-15T22:17:56.183", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-54237", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T21:39:39.742228Z", "version": "2.0.3"}}]}, "published": "2025-12-30T13:16:12.193", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0c764cc271d3aa6528ae1b3394babf34ac01f775"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e40b801b3603a8f90b46acbacdea3505c27f01c0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2f46de98c11d41ac8d22765f47ba54ce5480a5b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fe35c24b730d38b421da93ac5d493cb4495e8e54"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()", "id": "2426133", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2426133"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2023-54237", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-54237\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-54237\nhttps://lore.kernel.org/linux-cve-announce/2025123032-CVE-2023-54237-c03d@gregkh/T"], "threat_severity": "Low"}

{}