CVE-2026-99032

Что произошло

In the Linux kernel, the following vulnerability has been resolved: net/smc: protect clcsock lifetime in smc_getname smc_getname() dereferences smc->clcsock without holding clcsock_release_lock. Link-group termination can release the CLC socket through smc_close_active_abort() while the SMC socket is still open, for example after shutdown(SHUT_WR). A getsockname() caller can load smc->clcsock, then the termination worker can clear the pointer and call sock_release() before the caller accesses clcsock->ops or invokes getname(). This causes a use-after-free; if the worker clears the pointer before the load, it causes a NULL dereference. The syscall's file reference keeps the SMC socket alive but does not prevent asynchronous release of its CLC socket. KASAN reported the following with test-only timing instrumentation: BUG: KASAN: slab-use-after-free in smc_getname+0x19e/0x1b0 Read of size 8 at addr ffff888109abb4e0 by task poc/103 Call Trace: smc_getname+0x19e/0x1b0 do_getsockname+0xe5/0x170 __sys_getsockname+0x8c/0x100 Allocated by task 95: sock_alloc_inode+0x1e/0x280 sock_alloc+0x3d/0x240 __sock_create+0x7e/0x430 smc_create+0x121/0x240 Freed by task 0: kmem_cache_free+0xcc/0x340 rcu_core+0x50a/0x1850 Last potentially related work creation: evict+0x446/0x6c0 smc_clcsock_release+0xa8/0xd0 smc_close_active_abort+0x26a/0x3a0 __smc_lgr_terminate.part.0+0x137/0x2e0 Hold clcsock_release_lock across the pointer check and the getname() callback to serialize with smc_clcsock_release(). Return -EBADF if the CLC socket has already been released, preserving the existing peer state check and the callback's return value otherwise.

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "5d0fa089d5ed497366ea5c000c6eefb346c7cb01",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "94a43efd71ad440c35dd469559d3a6d665f102d9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "04069199816285c49199a35971f4298199609687",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "e607017a553d2a48e428ec8b8ffb06bf3bb92ce9",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "1512e3714b3946bda75a160a34f22a51710daa43",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "6a1833f0d7dc037c8e876b9178ba69d5d107c086",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "c223da71abfaea2ebb1c7208ae9ebf15038f9388",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "b03faa1fafc8018295401dc558bdc76362d860a4",
  "lessThan": "64a6b36b0e1855288080bc5f89769f27d6dc03c8",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "0b6153d04c96a1d4b6284692386aa21d04d7956c",
  "versionType": "git"
}

{
  "status": "affected",
  "version": "4.19.299",
  "lessThan": "4.20",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "5.1"
}

{
  "status": "unaffected",
  "version": "0",
  "lessThan": "5.1",
  "versionType": "semver"
}

{
  "status": "unaffected",
  "version": "5.10.273",
  "versionType": "semver",
  "lessThanOrEqual": "5.10.*"
}

{
  "status": "unaffected",
  "version": "5.15.224",
  "versionType": "semver",
  "lessThanOrEqual": "5.15.*"
}

{
  "status": "unaffected",
  "version": "6.1.191",
  "versionType": "semver",
  "lessThanOrEqual": "6.1.*"
}

{
  "status": "unaffected",
  "version": "6.6.160",
  "versionType": "semver",
  "lessThanOrEqual": "6.6.*"
}

{
  "status": "unaffected",
  "version": "6.12.113",
  "versionType": "semver",
  "lessThanOrEqual": "6.12.*"
}

{
  "status": "unaffected",
  "version": "6.18.57",
  "versionType": "semver",
  "lessThanOrEqual": "6.18.*"
}

{
  "status": "unaffected",
  "version": "7.2.11",
  "versionType": "semver",
  "lessThanOrEqual": "7.2.*"
}

{
  "status": "unaffected",
  "version": "7.3",
  "versionType": "original_commit_for_fix",
  "lessThanOrEqual": "*"
}

CVSS: оценки и векторы

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Источники и ссылки

{
  "cwes": [],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:22.705992+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.963617+00:00"
  },
  "scores": [
    "cve",
    "ghsa",
    "nvd"
  ],
  "status": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.963617+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.963617+00:00"
  },
  "solutions": [],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-01T21:13:22.705992+00:00"
  },
  "references": [
    "cve",
    "ghsa",
    "nvd"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-30T12:57:41.963617+00:00"
  },
  "workarounds": [],
  "configurations": []
}

Хронология записи

1. Данные обновлены02.11.2026, 03:33
2. Данные обновлены02.11.2026, 00:13
3. Данные обновлены31.10.2026, 12:00
4. Данные обновлены30.10.2026, 20:51
5. Данные обновлены30.10.2026, 15:58
6. Данные обновлены29.10.2026, 12:47
7. Опубликована28.10.2026, 23:51

Личная заметка и статус

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