CVE-2026-64108

🗓️ 19 Jul 2026 15:40:10Reported by LinuxType

Fix CIFS busy dentry after unmount by flushing deferred close work before anonymous super shutdown.

Reporter	Title	Published	Views	Family All 8
ATTACKERKB	CVE-2026-64108	19 Jul 202615:40	–	attackerkb
Cvelist	CVE-2026-64108 cifs: Fix busy dentry used after unmounting	19 Jul 202615:40	–	cvelist
EUVD	EUVD-2026-45793	19 Jul 202615:40	–	euvd
NVD	CVE-2026-64108	19 Jul 202616:17	–	nvd
OSV	CVE-2026-64108 cifs: Fix busy dentry used after unmounting	19 Jul 202615:40	–	osv
OSV	DEBIAN-CVE-2026-64108	19 Jul 202616:17	–	osv
OSV	UBUNTU-CVE-2026-64108	20 Jul 202600:00	–	osv
Positive Technologies	PT-2026-61425	19 Jul 202600:00	–	ptsecurity

Vulners

CNA

Node

linux linux_kernelRange6.1.167–6.1.175

linux linux_kernelRange6.6.130–6.6.142

linux linux_kernelRange6.12.78–6.12.92

linux linux_kernelRange6.18.20–6.18.34

linux linux_kernelRange6.19.10–6.20

linux linux_kernelRange7.0–6.1.175

linux linux_kernelRange6.2.0–6.6.142

linux linux_kernelRange6.7.0–6.12.92

linux linux_kernelRange6.13.0–6.18.34

linux linux_kernelRange6.19.0–7.0.11

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/smb/client/cifsfs.c"
    ],
    "versions": [
      {
        "version": "708c276f516d27beaded7f372ac8111cee43926c",
        "lessThan": "c7364cea52531534676b9f7dbc0a477c11f4c050",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0629a1a187e424373364d681b42b101894bdb548",
        "lessThan": "bdc349a87f1fb02c18c4071858a06542bfea783d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0e4b8faaaebe3137bec5723ef2b3cb0437fb38fd",
        "lessThan": "f2deaa2f409a4598eaa10f2a93a676c0632af248",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "f655467a9973f964b267871e5fef533ad5014494",
        "lessThan": "5e7d9d0805e58fa3760894e73115b7a74024fd07",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "340cea84f691c5206561bb2e0147158fe02070be",
        "lessThan": "e1ffa6cf662383f95816eed1b623429d82675e75",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "340cea84f691c5206561bb2e0147158fe02070be",
        "lessThan": "c68337442f03953237a94577beb468ab2662a851",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "30afc6ea72cc6cf7c8d579e79b64232801c38d08",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.1.167",
        "lessThan": "6.1.175",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.6.130",
        "lessThan": "6.6.142",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.12.78",
        "lessThan": "6.12.92",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.18.20",
        "lessThan": "6.18.34",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.19.10",
        "lessThan": "6.20",
        "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/smb/client/cifsfs.c"
    ],
    "versions": [
      {
        "version": "7.0",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "7.0",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.175",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.142",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.92",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.11",
        "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/5e7d9d0805e58fa3760894e73115b7a74024fd07
git	www.git.kernel.org/stable/c/c7364cea52531534676b9f7dbc0a477c11f4c050
git	www.git.kernel.org/stable/c/bdc349a87f1fb02c18c4071858a06542bfea783d
git	www.git.kernel.org/stable/c/f2deaa2f409a4598eaa10f2a93a676c0632af248
git	www.git.kernel.org/stable/c/c68337442f03953237a94577beb468ab2662a851
git	www.git.kernel.org/stable/c/e1ffa6cf662383f95816eed1b623429d82675e75

20 Jul 2026 15:17Current

5.3Medium risk

Vulners AI Score5.3

CVSS 3.17.8

EPSS0.00172