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CVE-2026-89704 nfsd: sample writeback error cursor before async COPY loop

🗓️ 11 Sep 2026 19:46:21Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 10 Views

Linux kernel nfsd COPY races on writeback error cursor causing silent data loss.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-89704
11 Sep 202619:46
cve
euvd
EUVD
EUVD-2026-76616
11 Sep 202619:46
euvd
nvd
NVD
CVE-2026-89704
11 Sep 202620:19
nvd
ptsecurity
Positive Technologies
PT-2026-90420
11 Sep 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-89704
11 Sep 202622:28
redhatcve
[
  {
    "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": "555dbf1a9aac6d3150c8b52fa35f768a692f4eeb",
        "lessThan": "52b2db7a72e19ac2686fa4b2a52406661e7bf9e2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "555dbf1a9aac6d3150c8b52fa35f768a692f4eeb",
        "lessThan": "8277d4a11ae2cb5495842be558fd946032c24363",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "555dbf1a9aac6d3150c8b52fa35f768a692f4eeb",
        "lessThan": "a1cbafe756cd5e6ab0e099062f37da7a5b081169",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "555dbf1a9aac6d3150c8b52fa35f768a692f4eeb",
        "lessThan": "20a67a7d18221af736f124770c2c5e859b479046",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f14816f2f928c560d28ba344af689f56efcd6f55",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "3145fe0ebb16e1715ad541a301bc6675c8375fcd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5.10.124",
        "lessThan": "5.11",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "5.15.49",
        "lessThan": "5.16",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "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": "5.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.17",
        "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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