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CVE-2026-64389 ksmbd: validate NTLMv2 response before updating session key

🗓️ 25 Jul 2026 08:50:36Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate NTLMv2 response before updating session key ksmbd_auth_ntlmv2() derives the NTLMv2 session key intosess->sess_key before it verifies the NTLMv2 response.ksmbd_d...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-64389
25 Jul 202608:50
cve
Debian CVE
CVE-2026-64389
25 Jul 202608:50
debiancve
EUVD
EUVD-2026-48933
25 Jul 202608:50
euvd
NVD
CVE-2026-64389
25 Jul 202610:17
nvd
Positive Technologies
PT-2026-64610
25 Jul 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/auth.c"
    ],
    "versions": [
      {
        "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
        "lessThan": "b56400364aed5c34d6e1a0b493081290a5328a9c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
        "lessThan": "89ca7756d5566ba636bb9092cdbe57dab095e136",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
        "lessThan": "954d196bebb2b50151cb96454c72dc113b2af1ac",
        "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/smb/server/auth.c"
    ],
    "versions": [
      {
        "version": "5.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.15",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.4",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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25 Jul 2026 08:50Current
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