{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2f8fbfb8d09c06decde162090fac3ee220aa280"
            },
            {
              "fixed": "5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14"
            },
            {
              "fixed": "ee2216dbdf0c677e89bb43e03247dba590ed00ef"
            },
            {
              "fixed": "f511807feee7cb29b61bdfa86472c7e9e2e5df94"
            },
            {
              "fixed": "08c600b7e1818539ba5efee4cdb06215c245ca78"
            },
            {
              "fixed": "b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d"
            },
            {
              "fixed": "c6c484a7d5bff6b929a86d7ed5130f29834c6a0d"
            },
            {
              "fixed": "f80add1bfb3425100a325b14f19648e75669a954"
            },
            {
              "fixed": "e3d9c7160d483fc8f9e225aafad8ecbbc43f3151"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.4.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64379.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: mask server-provided mode to 07777 in modefromsid\n\nWhen modefromsid is active, parse_dacl() applies the server-provided\nsub_auth[2] value from the NFS mode SID to cf_mode without masking to\n07777. Apply the correct masking, same as in the read path.",
  "id": "CVE-2026-64379",
  "modified": "2026-07-28T03:56:09.277667122Z",
  "published": "2026-07-25T08:50:29.717Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64379.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64379"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "smb: client: mask server-provided mode to 07777 in modefromsid"
}