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CVE-2026-72068 posix-cpu-timers: Use u64 multiplication in update_rlimit_cpu()

🗓️ 15 Aug 2026 05:52:21Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 22 Views

32-bit Linux kernel CPU timer fires prematurely for RLIMIT_CPU >=5s due to u64 cast missing in update_rlimit_cpu().

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/time/posix-cpu-timers.c"
    ],
    "versions": [
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "feb5c87c8514444ba891b75a5a3eae57c64edaf8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "384628d6cdde0fcd76868606fad3ad8293100afb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "1fafc4d9b411645eb34de43362b966dc8fb3e263",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "cff8281bacd2866767e6194c3079d33b6c5a74f4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "edf6babb9edd2d3e19229ade339081f439d4f478",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "ea6a188ee805e841a0e242f14d15953e0dfa74bb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "571e1f10b5996ba3e4dc63ea77de4aa309c384ce",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "858cf3a8c59968e7c5f7c1a1192459a0d52d1ab4",
        "lessThan": "26aff38fefb1d6cd87e22525f41cc8f1aa61b24f",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "kernel/time/posix-cpu-timers.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.261",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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