CVE-2026-64139

🗓️ 19 Jul 2026 15:40:32Reported by LinuxType

ksmbd fixes SID memory leak on overflow in set_posix_acl_entries_dacl by freeing sid before break.

Reporter	Title	Published	Views	Family All 8
ATTACKERKB	CVE-2026-64139	19 Jul 202615:40	–	attackerkb
Cvelist	CVE-2026-64139 ksmbd: fix SID memory leak in set_posix_acl_entries_dacl() on overflow	19 Jul 202615:40	–	cvelist
EUVD	EUVD-2026-45824	19 Jul 202615:40	–	euvd
NVD	CVE-2026-64139	19 Jul 202616:17	–	nvd
OSV	CVE-2026-64139 ksmbd: fix SID memory leak in set_posix_acl_entries_dacl() on overflow	19 Jul 202615:40	–	osv
OSV	DEBIAN-CVE-2026-64139	19 Jul 202616:17	–	osv
OSV	UBUNTU-CVE-2026-64139	20 Jul 202600:00	–	osv
Positive Technologies	PT-2026-61456	19 Jul 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange6.1.175–6.2

linux linux_kernelRange6.6.136–6.6.142

linux linux_kernelRange6.12.84–6.12.92

linux linux_kernelRange6.18.25–6.18.34

linux linux_kernelRange7.0.2–7.0.11

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/smbacl.c"
    ],
    "versions": [
      {
        "version": "8d5729350b236896f51379588d9a690b7fafb8db",
        "lessThan": "9d378e17c864da08c3a4df41dae92cfa6468b00a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e1955a94b6f17f4b058afa955a6f187eb3ed7615",
        "lessThan": "519fb0a42ce5d7e46935577309fb282a5f2c6ea3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "5e7b8f3c539d69b2ed5f2408e2f75e68ce7eef43",
        "lessThan": "0e198f09cb2a554c04de0fea4e790f1250a943ca",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "ef7902be3f215b6bf7babe4dc9dd9a7d57dad7a7",
        "lessThan": "eced48cb08f07393a5ea770fdd1026452883c3ad",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "299f962c0b02d048fb45d248b4da493d03f3175d",
        "lessThan": "af92ee994cc7f7e83a41c2025f32257a2f82a7ef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "41e53a773db6342ac9a689ee5ba635c31744c9f0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.1.175",
        "lessThan": "6.2",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/smbacl.c"
    ],
    "versions": [
      {
        "version": "6.6.136",
        "lessThan": "6.6.142",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.84",
        "lessThan": "6.12.92",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.18.25",
        "lessThan": "6.18.34",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "7.0.2",
        "lessThan": "7.0.11",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/0e198f09cb2a554c04de0fea4e790f1250a943ca
git	www.git.kernel.org/stable/c/519fb0a42ce5d7e46935577309fb282a5f2c6ea3
git	www.git.kernel.org/stable/c/af92ee994cc7f7e83a41c2025f32257a2f82a7ef
git	www.git.kernel.org/stable/c/9d378e17c864da08c3a4df41dae92cfa6468b00a
git	www.git.kernel.org/stable/c/eced48cb08f07393a5ea770fdd1026452883c3ad

19 Jul 2026 16:17Current

5.7Medium risk

Vulners AI Score5.7