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CVE-2026-89676 nfsd: fix stale s2s_cp_stateids IDR entry for async COPY

🗓️ 11 Sep 2026 19:46:00Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 48 Views

Stale s2s_cp_stateids IDR entry in Linux nfsd async COPY causes use-after-free of reused buffer.

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/nfs4proc.c"
    ],
    "versions": [
      {
        "version": "e0639dc5805a9d4faaa2c07ad98fa853b9529dd3",
        "lessThan": "bdce362f49410b9def65d76c21f6259cd89696d8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0639dc5805a9d4faaa2c07ad98fa853b9529dd3",
        "lessThan": "7aa34ea78f74e6ef60c8112635a87fc43d57f6c9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0639dc5805a9d4faaa2c07ad98fa853b9529dd3",
        "lessThan": "9b4e5e9ba5ae13808b8a6d229d87c54611ba0e7a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0639dc5805a9d4faaa2c07ad98fa853b9529dd3",
        "lessThan": "14b978e8d05ce018d0afbeb6611833ef91713a02",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e0639dc5805a9d4faaa2c07ad98fa853b9529dd3",
        "lessThan": "d0beaee498e11880e72826026db0e9c9890fc114",
        "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/nfs4proc.c"
    ],
    "versions": [
      {
        "version": "4.20",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.20",
        "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": "6.18.50",
        "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 3.19.8
EPSS0.00457
SSVC
48