CVE-2026-63796

🗓️ 19 Jul 2026 12:02:04Reported by LinuxType

Ocfs2 rejects oversized group bitmap descriptors with a physical-capacity check on the parent bitmap.

Reporter	Title	Published	Views	Family All 8
ATTACKERKB	CVE-2026-63796	19 Jul 202612:02	–	attackerkb
Cvelist	CVE-2026-63796 ocfs2: reject oversized group bitmap descriptors	19 Jul 202612:02	–	cvelist
EUVD	EUVD-2026-45462	19 Jul 202612:02	–	euvd
NVD	CVE-2026-63796	19 Jul 202612:16	–	nvd
OSV	CVE-2026-63796 ocfs2: reject oversized group bitmap descriptors	19 Jul 202612:02	–	osv
OSV	DEBIAN-CVE-2026-63796	19 Jul 202612:16	–	osv
Positive Technologies	PT-2026-61112	19 Jul 202600:00	–	ptsecurity
SUSE CVE	SUSE CVE-2026-63796	19 Jul 202617:35	–	susecve

Vulners

CNA

Node

linux linux_kernelRange2.6.16–5.10.260

linux linux_kernelRange5.11.0–5.15.211

linux linux_kernelRange5.16.0–6.1.177

linux linux_kernelRange6.2.0–6.6.144

linux linux_kernelRange6.7.0–6.12.95

linux linux_kernelRange6.13.0–6.18.38

linux linux_kernelRange6.19.0–7.1.3

linux linux_kernelRange7.2.0–7.2-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ocfs2/suballoc.c"
    ],
    "versions": [
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "336340a0f8a141df8a4eb21a5a86f8ffb87769f6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "296c6a42b1174395935ca4cfe8f393e37b698d54",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "d2cd59fa848f9f13796ef214d3b1b5ca9a3fe21e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "c5a125eadba05ba421c4b55e68da22b4a40d32b4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "8f9903b0cdbb3155a8899410330b4b4d583a7a5c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "4cd57ebee395041099fcdfcabb00749ce38d8b27",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "99c21e7263248c3f084756bfae08163cc5d6c62f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ccd979bdbce9fba8412beb3f1de68a9d0171b12c",
        "lessThan": "9bd541e09dffff27e5bec0f9f45b0228173a5375",
        "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/ocfs2/suballoc.c"
    ],
    "versions": [
      {
        "version": "2.6.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.260",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.211",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.177",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.144",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.95",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.38",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.3",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/9bd541e09dffff27e5bec0f9f45b0228173a5375
git	www.git.kernel.org/stable/c/d2cd59fa848f9f13796ef214d3b1b5ca9a3fe21e
git	www.git.kernel.org/stable/c/99c21e7263248c3f084756bfae08163cc5d6c62f
git	www.git.kernel.org/stable/c/8f9903b0cdbb3155a8899410330b4b4d583a7a5c
git	www.git.kernel.org/stable/c/4cd57ebee395041099fcdfcabb00749ce38d8b27
git	www.git.kernel.org/stable/c/c5a125eadba05ba421c4b55e68da22b4a40d32b4
git	www.git.kernel.org/stable/c/336340a0f8a141df8a4eb21a5a86f8ffb87769f6
git	www.git.kernel.org/stable/c/296c6a42b1174395935ca4cfe8f393e37b698d54

19 Jul 2026 12:16Current

5.5Medium risk

Vulners AI Score5.5