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CVE-2026-64395 ksmbd: require source read access for duplicate extents

🗓️ 25 Jul 2026 08:50:40Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

ksmbd fixes require read access on source for duplicate extents to prevent data copy to attacker destinations.

Related
Affected
Refs
[
  {
    "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": "eb817368f50c1cbe1bd07044124aad7db6330e3a",
        "lessThan": "2d2ab6983620c2d60ce7db72133984ca3873b929",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb817368f50c1cbe1bd07044124aad7db6330e3a",
        "lessThan": "67bdad9cf01b25030e3bf00bbce6c309319d6663",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb817368f50c1cbe1bd07044124aad7db6330e3a",
        "lessThan": "b0d4d5cb846a1ddb7aaab9adfb5986e4540e6e5f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb817368f50c1cbe1bd07044124aad7db6330e3a",
        "lessThan": "db231af842868268839f9f9619c68cb27830d8be",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb817368f50c1cbe1bd07044124aad7db6330e3a",
        "lessThan": "a10942af27832c2761d020863a46e79bebe0567d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb817368f50c1cbe1bd07044124aad7db6330e3a",
        "lessThan": "cedff600f1642aa982178503552f0d007bc829c8",
        "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/smb2pdu.c"
    ],
    "versions": [
      {
        "version": "5.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.15",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.96",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.39",
        "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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