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CVE-2026-93794 smb/client: flush dirty data before punching a hole

🗓️ 24 Sep 2026 16:02:27Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 37 Views

Dirty folio write-back in Linux kernel smb/client fills punched holes causing data inconsistency.

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/smb2ops.c"
    ],
    "versions": [
      {
        "version": "31742c5a331766bc7df6b0d525df00c6cd20d5a6",
        "lessThan": "216e469586057c29409e4ef8311d282388c6e251",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "31742c5a331766bc7df6b0d525df00c6cd20d5a6",
        "lessThan": "6c265aca08155e519a8f6f6071c59dff4f535f70",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "31742c5a331766bc7df6b0d525df00c6cd20d5a6",
        "lessThan": "39562a56cdb515f6635c3e7bfe6629439b18a169",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "31742c5a331766bc7df6b0d525df00c6cd20d5a6",
        "lessThan": "d7d2adcd022baade5cab65ca492ce63421ce3a6e",
        "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/smb2ops.c"
    ],
    "versions": [
      {
        "version": "3.17",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.17",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.158",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.111",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.53",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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