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CVE-2026-89663 nfsd: revoke copy-notify stateids before dropping their reference

🗓️ 11 Sep 2026 19:45:50Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Use-after-free in Linux kernel nfsd when copy-notify stateids are revoked before reference drop.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-89663
11 Sep 202619:45
cve
euvd
EUVD
EUVD-2026-76575
11 Sep 202619:45
euvd
nvd
NVD
CVE-2026-89663
11 Sep 202620:19
nvd
ptsecurity
Positive Technologies
PT-2026-90379
11 Sep 202600:00
ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nfsd/nfs4state.c"
    ],
    "versions": [
      {
        "version": "624322f1adc58acd0b69f77a6ddc764207e97241",
        "lessThan": "6b8149448cdcb476fba4559d1ecc247efee9971b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "624322f1adc58acd0b69f77a6ddc764207e97241",
        "lessThan": "b56d2c5f01cddbeca7d11cce81d97db4ec9a464f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "624322f1adc58acd0b69f77a6ddc764207e97241",
        "lessThan": "ff8a3cff02b92b2a82f1a9876038fcf953ae9c25",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "624322f1adc58acd0b69f77a6ddc764207e97241",
        "lessThan": "3b0c3595db99bb4bebd7c8aa8a36f3c50e411bb7",
        "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/nfs4state.c"
    ],
    "versions": [
      {
        "version": "5.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.109",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.50",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.4",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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