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CVE-2026-43362 smb: client: fix in-place encryption corruption in SMB2_write()

🗓️ 08 May 2026 14:21:16Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 28 Views

Fix in-place encryption corruption in SMB2_write by deep-copying payload with iov_iter_kvec to prevent replayed ciphertext.

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/client/smb2pdu.c"
    ],
    "versions": [
      {
        "version": "026e93dc0a3eefb0be060bcb9ecd8d7a7fd5c398",
        "lessThan": "438e77435aee2894d5edf90be5c87004a57f6258",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "026e93dc0a3eefb0be060bcb9ecd8d7a7fd5c398",
        "lessThan": "52327268224fb9ccc7ecfbbdfdfff54b6e93c518",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "026e93dc0a3eefb0be060bcb9ecd8d7a7fd5c398",
        "lessThan": "92e64f1852f455f57d0850989e57c30d7fac7d95",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "026e93dc0a3eefb0be060bcb9ecd8d7a7fd5c398",
        "lessThan": "aea5e37388a080361110ab5790f57ae0af383650",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "026e93dc0a3eefb0be060bcb9ecd8d7a7fd5c398",
        "lessThan": "d78840a6a38d312dc1a51a65317bb67e46f0b929",
        "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/client/smb2pdu.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.130",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.78",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.19",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.9",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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