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CVE-2026-74493 net/smc: fix socket use-after-free during link group termination

🗓️ 15 Aug 2026 12:27:21Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 63 Views

Linux kernel smc use-after-free in __smc_lgr_terminate when close races link group termination.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-74493
15 Aug 202612:27
–attackerkb
astralinux
AstraLinux
Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1
5 Oct 202611:39
–astralinux
cbl_mariner
CBLMariner
CVE-2026-74493 affecting package kernel for versions less than 6.6.152.1-1
1 Oct 202604:01
–cbl_mariner
circl
Circl
CVE-2026-74493
17 Aug 202616:30
–circl
cve
CVE
CVE-2026-74493
15 Aug 202612:27
–cve
debian
Debian
[SECURITY] [DLA 4777-1] linux security update
8 Sep 202616:49
–debian
debian
Debian
[SECURITY] [DLA 4788-1] linux-6.12 security update
19 Sep 202620:44
–debian
debian
Debian
[SECURITY] [DSA 6466-1] linux security update
25 Aug 202620:09
–debian
debiancve
Debian CVE
CVE-2026-74493
15 Aug 202612:27
–debiancve
nessus
Tenable Nessus
Debian dla-4777 : ata-modules-6.1.0-52-armmp-di - security update
8 Sep 202600:00
–nessus
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/smc_core.c"
    ],
    "versions": [
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "ff44f2df57fb5560bdc75eb977867643e764a262",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "9fb17c95b8f0683570fca1fb2792264147af937a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "5a42f162b857019a4c10ff687dc3bcdf51831865",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "281c103a8eaed59001ce952f231df1b07674215a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "f807a63d0d95680c34f677700da9148a07d7c78f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "f0541a775d04c88e90ba448e35ce0d743512822a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "69318b5215f2dc32c345a3d65b98b4b1bf29c007",
        "lessThan": "f621d6ebeebb6374342571e4ddf45fdbc420f6cd",
        "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/smc_core.c"
    ],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.5",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.151",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.103",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.44",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.8",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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19 Aug 2026 16:37Current
CVSS 3.19.8
EPSS0.00734
63