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CVE-2026-53198 ksmbd: fix use-after-free of a deferred file_lock on double SMB2_CANCEL

🗓️ 25 Jun 2026 08:39:07Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 2 Views

ksmbd fixes use-after-free of a deferred file_lock when a second SMB2_CANCEL arrives.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-53198
25 Jun 202608:39
attackerkb
CVE
CVE-2026-53198
25 Jun 202608:39
cve
Debian CVE
CVE-2026-53198
25 Jun 202608:39
debiancve
EUVD
EUVD-2026-39289
25 Jun 202608:39
euvd
NVD
CVE-2026-53198
25 Jun 202609:16
nvd
Positive Technologies
PT-2026-52294
25 Jun 202600:00
ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/smb2pdu.c"
    ],
    "versions": [
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "b7063c7426ea5a4d15e01b60538718765392f49d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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        "status": "affected",
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      },
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        "status": "affected",
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      },
      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
        "lessThan": "2b2eda2821cff1d1b5a423b6ee7d8fc6fbc8e694",
        "status": "affected",
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      {
        "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "0",
        "lessThan": "6.1.176",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "0",
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        "status": "affected",
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      },
      {
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        "status": "affected",
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      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/smb/server/smb2pdu.c"
    ],
    "versions": [
      {
        "version": "6.1.176",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.143",
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        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.94",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.36",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.13",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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