CVE-2026-45991

🗓️ 27 May 2026 12:55:43Reported by LinuxType

Fixed heap out-of-bounds in UDF partition descriptor append by recording partnum and correct sizing.

Reporter	Title	Published	Views	Family All 17
CNNVD	Linux kernel 安全漏洞	27 May 202600:00	–	cnnvd
Cvelist	CVE-2026-45991 udf: fix partition descriptor append bookkeeping	27 May 202612:55	–	cvelist
Debian CVE	CVE-2026-45991	27 May 202612:55	–	debiancve
EUVD	EUVD-2026-32287	27 May 202615:33	–	euvd
NVD	CVE-2026-45991	27 May 202614:17	–	nvd
OSV	BELL-CVE-2026-45991	28 May 202606:10	–	osv
OSV	DEBIAN-CVE-2026-45991	27 May 202614:17	–	osv
OSV	ECHO-07EF-67A4-0329	28 May 202604:10	–	osv
OSV	ROOT-OS-DEBIAN-11-CVE-2026-45991 CVE-2026-45991 in rootio-linux - Patched by Root	31 May 202603:58	–	osv
OSV	ROOT-OS-DEBIAN-12-CVE-2026-45991 CVE-2026-45991 in rootio-linux - Patched by Root	2 Jun 202604:12	–	osv

Vulners

CNA

Node

linux linux_kernelRange4.18.7–4.19

linux linux_kernelRange4.19–6.6.140

linux linux_kernelRange6.7.0–6.12.88

linux linux_kernelRange6.13.0–7.0.4

linux linux_kernelRange7.1.0–7.1-rc1

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/udf/super.c"
    ],
    "versions": [
      {
        "version": "ee4af50ca94f58afc3532662779b9cf80bbe27c8",
        "lessThan": "058b451b1039f056d1362c4fec2229e522366ab0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ee4af50ca94f58afc3532662779b9cf80bbe27c8",
        "lessThan": "b5597bb83fc37b5b5da74a4453fa920b932cf39a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ee4af50ca94f58afc3532662779b9cf80bbe27c8",
        "lessThan": "08fa5d818e5bf53c7ca234d88ba334f32004e9b6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ee4af50ca94f58afc3532662779b9cf80bbe27c8",
        "lessThan": "08841b06fa64d8edbd1a21ca6e613420c90cc4b8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7f401f160a9c7a1ff84ba3cb9b2f636d1f5cfb6b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4.18.7",
        "lessThan": "4.19",
        "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/udf/super.c"
    ],
    "versions": [
      {
        "version": "4.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.140",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.88",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.4",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/b5597bb83fc37b5b5da74a4453fa920b932cf39a
git	www.git.kernel.org/stable/c/08fa5d818e5bf53c7ca234d88ba334f32004e9b6
git	www.git.kernel.org/stable/c/058b451b1039f056d1362c4fec2229e522366ab0
git	www.git.kernel.org/stable/c/08841b06fa64d8edbd1a21ca6e613420c90cc4b8

30 May 2026 11:17Current

5.8Medium risk

Vulners AI Score5.8

CVSS 3.17.8

EPSS0.00013