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nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr()

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nfsd: add fh_want_write() for early-verified SETATTR in nfsd_proc_setattr() The BOTH_TIME_SET branch calls fh_verify() early so setattr_prepare() can inspect the dentry. This causes nfsd_setattr() to skip fh_want_write(), so notify_change() runs without a mount write reference. Add the missing fh_want_write() call after the early fh_verify().

Announced Group revision 1
Original source ↗

CVE-2026-89697

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-89697

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "3eec9d791968c177a4a8cda9af5c04f79dae09cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "9229d824b938f4fb0ea7a5dddade51735e6fe6f9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "2150305134889fb2fc25228d35353bd2f6f29500",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "d823bf9285cdf4514873b85ab5a888878dd4e8f4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "15ca3b64a69caa6194bed8f98a20ed90a11c11dd",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "533964d420d385e11b08dd4c56c66ef5dcccaf08",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "c4a409b86a92815181a8e9395c6bf1696ad19175",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "cc265089ce1b176dde963c74b53593446ee7f99a",
        "lessThan": "4e475be769aa9f7a2c1ce55a2b8592cfccacddcc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "1cb57d81cf20fe24b9e2e1daf57bfbdc24b77cd8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3.18.46",
        "lessThan": "3.19",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "fs/nfsd/nfsproc.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.2"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.2",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/nfsd/nfsproc.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89697

Source reference: /cveMetadata/cveId

Publisher severity

critical

Source reference: /containers/cna/metrics

Event
#35181 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89697 · Revision 1Source updated