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CVE-2026-98543 bpf: fs/xattr: don't assume the inode is locked in path_unlink/path_rmdir

🗓️ 18 Oct 2026 15:18:10Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 44 Views

Race condition in Linux kernel BPF LSM allows mutation of xattrs without inode locks.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/bpf_fs_kfuncs.c"
    ],
    "versions": [
      {
        "version": "56467292794b800164df20c076c409ac548e56ec",
        "lessThan": "7504b677c4370c9e4b153c553ff8831c093b1ff6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "56467292794b800164df20c076c409ac548e56ec",
        "lessThan": "640d37fbd34d03af727dbc567f48c0203d1de6b4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "56467292794b800164df20c076c409ac548e56ec",
        "lessThan": "35d442ed1f86465e49df3119fb898f985186db13",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/bpf_fs_kfuncs.c"
    ],
    "versions": [
      {
        "version": "6.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.15",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.55",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.9",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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24 Oct 2026 14:09Current
CVSS 3.17.3
EPSS0.00154
44