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CVE-2026-31402 nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

🗓️ 03 Apr 2026 15:16:05Reported by LinuxType 
cvelist
 cvelist🔗 www.cve.org👁 17 Views

Linux kernel fix for heap overflow in NFSv4.0 LOCK replay cache by validating response length before caching.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB		CVE-2026-31402
3 Apr 202615:16
–attackerkb
Tenable Nessus		Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1594)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1596)
30 Apr 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1681)
9 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-118 (ALASKERNEL-5.10-2026-118)
9 May 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0139: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2026:0139)
29 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : kernel (ALSA-2026:13565)
7 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 10 : kernel (ALSA-2026:13566)
7 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2026:13577)
5 May 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : kernel-rt (ALSA-2026:13578)
5 May 202600:00
–nessus
Rows per page
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/nfsd/nfs4xdr.c",
      "fs/nfsd/state.h"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "f9fcb4441f6c02bb20c2eb340101e27dfe23607c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "c9452c0797c95cf2378170df96cf4f4b3bca7eff",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "8afb437ea1f70cacb4bbdf11771fb5c4d720b965",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "dad0c3c0a8e5d1d6eb0fc455694ce3e25e6c57d0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "0f0e2a54a31a7f9ad2915db99156114872317388",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "ae8498337dfdfda71bdd0b807c9a23a126011d76",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "5133b61aaf437e5f25b1b396b14242a6bb0508e2",
        "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",
      "fs/nfsd/state.h"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.253",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.167",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.130",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.78",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.20",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.10",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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11 May 2026 22:08Current
CVSS 3.19.8
EPSS0.00197
network file systemlock replay cacheheap overflowsecurity fix
17