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CVE-2026-89699 nfsd: validate symlink target length in NFSv4 CREATE

🗓️ 11 Sep 2026 19:46:17Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 9 Views

Unbounded symlink target allocation in Linux kernel nfsd NFSv4 CREATE enables DoS.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-89699
11 Sep 202619:46
cve
euvd
EUVD
EUVD-2026-76611
11 Sep 202619:46
euvd
nvd
NVD
CVE-2026-89699
11 Sep 202620:19
nvd
ptsecurity
Positive Technologies
PT-2026-90415
11 Sep 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-89699
11 Sep 202621:39
redhatcve
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nfsd/nfs4xdr.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "b24843ea3de1676b29902457b38507c95a80649b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "895a485cd3758031ef9993c0d53cf19ce8fb4ccc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "45ec115cbfecb4b3cfab7fca6f73d1b60696a25a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "041f57056e5fb9c80adc088269322d2c61074406",
        "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/nfs4xdr.c"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "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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