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CVE-2026-31446

🗓️ 22 Apr 2026 13:53:42Reported by LinuxType 
cve
 cve
🔗 web.nvd.nist.gov👁 6 Views

Fixes use-after-free in ext4 update_super_work during unmount by skipping sysfs_notify.

Related
Detection
Affected
Refs
NVD
Vulners
CNA
Node
linuxlinux_kernelRange5.10.1145.11
OR
linuxlinux_kernelRange5.15.385.15.203
OR
linuxlinux_kernelRange5.17.65.18
OR
linuxlinux_kernelRange5.18.16.1.168
OR
linuxlinux_kernelRange6.26.6.131
OR
linuxlinux_kernelRange6.76.12.80
OR
linuxlinux_kernelRange6.136.18.21
OR
linuxlinux_kernelRange6.196.19.11
OROR
linuxlinux_kernelMatch5.18rc4
OR
linuxlinux_kernelMatch5.18rc5
OR
linuxlinux_kernelMatch5.18rc6
OR
linuxlinux_kernelMatch5.18rc7
OR
linuxlinux_kernelMatch5.18rc9
OROROROROR
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/ext4.h",
      "fs/ext4/super.c",
      "fs/ext4/sysfs.c"
    ],
    "versions": [
      {
        "version": "52c3a04f9ec2a16a4204d6274db338cb8d5b2d74",
        "lessThan": "c8fe17a1b308c3d8c703ebfb049b325f844342c3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b98535d091795a79336f520b0708457aacf55c67",
        "lessThan": "c4d829737329f2290dd41e290b7d75effdb2a7ff",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b98535d091795a79336f520b0708457aacf55c67",
        "lessThan": "9449f99ba04f5dd1c8423ad8a90b3651d7240d1d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b98535d091795a79336f520b0708457aacf55c67",
        "lessThan": "034053378dd81837fd6c7a43b37ee2e58d4f0b4e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b98535d091795a79336f520b0708457aacf55c67",
        "lessThan": "c97e282f7bfd0c3554c63d289964a5ca6a1d2ffe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b98535d091795a79336f520b0708457aacf55c67",
        "lessThan": "08b10e6f37fc533a759e9833af0692242e8b3f93",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "b98535d091795a79336f520b0708457aacf55c67",
        "lessThan": "d15e4b0a418537aafa56b2cb80d44add83e83697",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "585ef03c9e79672781f954daae730dfe24bf3a46",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "afe490e48d47df1b3f64012835c1bc2f075a8c8b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.15.38",
        "lessThan": "5.15.203",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.10.114",
        "lessThan": "5.11",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.17.6",
        "lessThan": "5.18",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ext4/ext4.h",
      "fs/ext4/super.c",
      "fs/ext4/sysfs.c"
    ],
    "versions": [
      {
        "version": "5.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.203",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.168",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.131",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.80",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.21",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.11",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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23 May 2026 16:05Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.8
EPSS0.00014
6