CVE-2026-63954

🗓️ 19 Jul 2026 14:55:46Reported by LinuxType

CVE-2026-63954: hpfs fix crash when hpfs_map_dnode_bitmap fails by avoiding uninitialized buffer release.

Reporter	Title	Published	Views	Family All 10
ATTACKERKB	CVE-2026-63954	19 Jul 202614:55	–	attackerkb
Cvelist	CVE-2026-63954 hpfs: fix a crash if hpfs_map_dnode_bitmap fails	19 Jul 202614:55	–	cvelist
Debian CVE	CVE-2026-63954	19 Jul 202614:55	–	debiancve
EUVD	EUVD-2026-45727	19 Jul 202614:55	–	euvd
NVD	CVE-2026-63954	19 Jul 202616:17	–	nvd
OSV	CVE-2026-63954 hpfs: fix a crash if hpfs_map_dnode_bitmap fails	19 Jul 202614:55	–	osv
OSV	DEBIAN-CVE-2026-63954	19 Jul 202616:17	–	osv
OSV	UBUNTU-CVE-2026-63954	20 Jul 202600:00	–	osv
Positive Technologies	PT-2026-61271	19 Jul 202600:00	–	ptsecurity
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-63954	20 Jul 202600:00	–	nessus

Vulners

CNA

Node

linux linux_kernelRange2.6.12–5.10.259

linux linux_kernelRange5.11.0–5.15.210

linux linux_kernelRange5.16.0–6.1.176

linux linux_kernelRange6.2.0–6.6.143

linux linux_kernelRange6.7.0–6.12.93

linux linux_kernelRange6.13.0–6.18.35

linux linux_kernelRange6.19.0–7.0.12

linux linux_kernelRange7.1.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/hpfs/alloc.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "010b08084000ef018f1a8de5197087f3b91d8cfe",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "d98d8562b3284b5a5c8eb67e71b794508e46e288",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "1648a3c7f4e18f46a4881920133fc4f2494185a0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "7c58c55a2a16f7274772507bd1637be609351b4f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "1d73a533760bc5abb83b3cc759133596f7bb708f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "0886c6f257fe3663f80218aa1919b0f3f21bf22c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "4f37bb30b57d6d403d02673074555bd3c3602bef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "974820a59efde7c1a7e1260bcfe9bb81f833cc9f",
        "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/hpfs/alloc.c"
    ],
    "versions": [
      {
        "version": "2.6.12",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.12",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.259",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.210",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.176",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.93",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.35",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.12",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/0886c6f257fe3663f80218aa1919b0f3f21bf22c
git	www.git.kernel.org/stable/c/010b08084000ef018f1a8de5197087f3b91d8cfe
git	www.git.kernel.org/stable/c/7c58c55a2a16f7274772507bd1637be609351b4f
git	www.git.kernel.org/stable/c/4f37bb30b57d6d403d02673074555bd3c3602bef
git	www.git.kernel.org/stable/c/1648a3c7f4e18f46a4881920133fc4f2494185a0
git	www.git.kernel.org/stable/c/974820a59efde7c1a7e1260bcfe9bb81f833cc9f
git	www.git.kernel.org/stable/c/d98d8562b3284b5a5c8eb67e71b794508e46e288
git	www.git.kernel.org/stable/c/1d73a533760bc5abb83b3cc759133596f7bb708f

20 Jul 2026 15:16Current

5.7Medium risk

Vulners AI Score5.7

CVSS 3.17.8

EPSS0.0021