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CVE-2025-40047 io_uring/waitid: always prune wait queue entry in io_waitid_wait()

🗓️ 28 Oct 2025 11:48:24Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Linux fix for io_uring waitid: prune wait queue entry on success to avoid race with cancellation.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "io_uring/waitid.c"
    ],
    "versions": [
      {
        "version": "f31ecf671ddc498f20219453395794ff2383e06b",
        "lessThan": "696ba6032081e617564a8113a001b8d7943cb928",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f31ecf671ddc498f20219453395794ff2383e06b",
        "lessThan": "3e2205db2f0608898d535da1964e1b376aacfdaa",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f31ecf671ddc498f20219453395794ff2383e06b",
        "lessThan": "2f8229d53d984c6a05b71ac9e9583d4354e3b91f",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "io_uring/waitid.c"
    ],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.7",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.53",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17.3",
        "lessThanOrEqual": "6.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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