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CVE-2026-64379 smb: client: mask server-provided mode to 07777 in modefromsid

🗓️ 25 Jul 2026 08:50:29Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

The Linux kernel SMB client masks server mode to 07777 when modefromsid is active to fix dacl parsing.

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/cifsacl.c"
    ],
    "versions": [
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "ee2216dbdf0c677e89bb43e03247dba590ed00ef",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "f511807feee7cb29b61bdfa86472c7e9e2e5df94",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "08c600b7e1818539ba5efee4cdb06215c245ca78",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "c6c484a7d5bff6b929a86d7ed5130f29834c6a0d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "f80add1bfb3425100a325b14f19648e75669a954",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e2f8fbfb8d09c06decde162090fac3ee220aa280",
        "lessThan": "e3d9c7160d483fc8f9e225aafad8ecbbc43f3151",
        "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/cifsacl.c"
    ],
    "versions": [
      {
        "version": "5.4",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.4",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.261",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.212",
        "lessThanOrEqual": "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-rc3",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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