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CVE-2026-89685 nfsd: fix clock domain mismatch in clients_still_reclaiming()

🗓️ 11 Sep 2026 19:46:07Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 48 Views

Clock domain mismatch in Linux kernel nfsd allows clients to hold grace indefinitely, causing DoS.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nfsd/netns.h",
      "fs/nfsd/nfs4state.c"
    ],
    "versions": [
      {
        "version": "20b7d86f29d39e8ae19bb29c24ffee70dc385ddf",
        "lessThan": "04c3e4456fe76e8d7c94171009df3165c3262c51",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20b7d86f29d39e8ae19bb29c24ffee70dc385ddf",
        "lessThan": "e92e80c5b043108029bc729b30d12c37158fb9cb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20b7d86f29d39e8ae19bb29c24ffee70dc385ddf",
        "lessThan": "f9cec313efb2fd18d962aad738a4892bce806016",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20b7d86f29d39e8ae19bb29c24ffee70dc385ddf",
        "lessThan": "9843649196221152b6e5d138a3ce859bdaae1d96",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "20b7d86f29d39e8ae19bb29c24ffee70dc385ddf",
        "lessThan": "09ea3eb9a518565f5bca386e81b993ed8825f5e8",
        "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/nfsd/netns.h",
      "fs/nfsd/nfs4state.c"
    ],
    "versions": [
      {
        "version": "5.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.160",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.111",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.51",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.4",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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21 Oct 2026 12:48Current
CVSS 3.17.5
EPSS0.00441
SSVC
48