{"id":"CVE-2026-99032","aliases":[],"cve":{"records":[{"id":"CVE-2026-99032","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.387Z","published":"2026-10-23T12:21:36.202Z","modified":"2026-10-30T12:41:05.122Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-10-30T12:41:05.122Z"}],"references":[{"url":"https://git.kernel.org/stable/c/5d0fa089d5ed497366ea5c000c6eefb346c7cb01","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/94a43efd71ad440c35dd469559d3a6d665f102d9","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/04069199816285c49199a35971f4298199609687","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/e607017a553d2a48e428ec8b8ffb06bf3bb92ce9","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/1512e3714b3946bda75a160a34f22a51710daa43","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/6a1833f0d7dc037c8e876b9178ba69d5d107c086","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/c223da71abfaea2ebb1c7208ae9ebf15038f9388","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/64a6b36b0e1855288080bc5f89769f27d6dc03c8","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19.299"}]}]}]}],"prioritization":[]},"title":"net/smc: protect clcsock lifetime in smc_getname","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: protect clcsock lifetime in smc_getname\n\nsmc_getname() dereferences smc->clcsock without holding\nclcsock_release_lock. Link-group termination can release the CLC socket\nthrough smc_close_active_abort() while the SMC socket is still open,\nfor example after shutdown(SHUT_WR).\n\nA getsockname() caller can load smc->clcsock, then the termination worker\ncan clear the pointer and call sock_release() before the caller accesses\nclcsock->ops or invokes getname(). This causes a use-after-free; if the\nworker clears the pointer before the load, it causes a NULL dereference.\nThe syscall's file reference keeps the SMC socket alive but does not\nprevent asynchronous release of its CLC socket.\n\nKASAN reported the following with test-only timing instrumentation:\n\n  BUG: KASAN: slab-use-after-free in smc_getname+0x19e/0x1b0\n  Read of size 8 at addr ffff888109abb4e0 by task poc/103\n  Call Trace:\n   smc_getname+0x19e/0x1b0\n   do_getsockname+0xe5/0x170\n   __sys_getsockname+0x8c/0x100\n\n  Allocated by task 95:\n   sock_alloc_inode+0x1e/0x280\n   sock_alloc+0x3d/0x240\n   __sock_create+0x7e/0x430\n   smc_create+0x121/0x240\n\n  Freed by task 0:\n   kmem_cache_free+0xcc/0x340\n   rcu_core+0x50a/0x1850\n\n  Last potentially related work creation:\n   evict+0x446/0x6c0\n   smc_clcsock_release+0xa8/0xd0\n   smc_close_active_abort+0x26a/0x3a0\n   __smc_lgr_terminate.part.0+0x137/0x2e0\n\nHold clcsock_release_lock across the pointer check and the getname()\ncallback to serialize with smc_clcsock_release(). Return -EBADF if the\nCLC socket has already been released, preserving the existing peer\nstate check and the callback's return value otherwise.","score":7.8,"severity":"high","published":"2026-10-23T12:21:36.202Z","modified":"2026-10-30T12:41:05.122Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"5d0fa089d5ed497366ea5c000c6eefb346c7cb01","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"94a43efd71ad440c35dd469559d3a6d665f102d9","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"04069199816285c49199a35971f4298199609687","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"e607017a553d2a48e428ec8b8ffb06bf3bb92ce9","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"1512e3714b3946bda75a160a34f22a51710daa43","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"6a1833f0d7dc037c8e876b9178ba69d5d107c086","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"c223da71abfaea2ebb1c7208ae9ebf15038f9388","versionType":"git"},{"version":"b03faa1fafc8018295401dc558bdc76362d860a4","status":"affected","lessThan":"64a6b36b0e1855288080bc5f89769f27d6dc03c8","versionType":"git"},{"version":"0b6153d04c96a1d4b6284692386aa21d04d7956c","status":"affected","versionType":"git"},{"version":"4.19.299","status":"affected","lessThan":"4.20","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99032"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.1","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.11","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99032"}],"remediation":[],"references":["https://git.kernel.org/stable/c/5d0fa089d5ed497366ea5c000c6eefb346c7cb01","https://git.kernel.org/stable/c/94a43efd71ad440c35dd469559d3a6d665f102d9","https://git.kernel.org/stable/c/04069199816285c49199a35971f4298199609687","https://git.kernel.org/stable/c/e607017a553d2a48e428ec8b8ffb06bf3bb92ce9","https://git.kernel.org/stable/c/1512e3714b3946bda75a160a34f22a51710daa43","https://git.kernel.org/stable/c/6a1833f0d7dc037c8e876b9178ba69d5d107c086","https://git.kernel.org/stable/c/c223da71abfaea2ebb1c7208ae9ebf15038f9388","https://git.kernel.org/stable/c/64a6b36b0e1855288080bc5f89769f27d6dc03c8"],"sources":[{"name":"CVE","id":"CVE-2026-99032","modified":"2026-10-30T12:41:05.122Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99032"}],"assessments":[{"source":"Linux","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8}],"sourceAffected":[],"observedAt":"2026-10-30T13:11:05.517Z","kev":{"status":"not-listed","checkedAt":"2026-11-14T23:50:31.991Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}