{"api_version":"1","generated_at":"2026-07-28T12:27:10+00:00","cve":"CVE-2026-64379","urls":{"html":"https://cve.report/CVE-2026-64379","api":"https://cve.report/api/cve/CVE-2026-64379.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64379","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64379"},"summary":{"title":"smb: client: mask server-provided mode to 07777 in modefromsid","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:21","updated_at":"2026-07-27 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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."}],"metrics":[{"cvssV3_1":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-27T05:00:07.664Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14"},{"url":"https://git.kernel.org/stable/c/ee2216dbdf0c677e89bb43e03247dba590ed00ef"},{"url":"https://git.kernel.org/stable/c/f511807feee7cb29b61bdfa86472c7e9e2e5df94"},{"url":"https://git.kernel.org/stable/c/08c600b7e1818539ba5efee4cdb06215c245ca78"},{"url":"https://git.kernel.org/stable/c/b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d"},{"url":"https://git.kernel.org/stable/c/c6c484a7d5bff6b929a86d7ed5130f29834c6a0d"},{"url":"https://git.kernel.org/stable/c/f80add1bfb3425100a325b14f19648e75669a954"},{"url":"https://git.kernel.org/stable/c/e3d9c7160d483fc8f9e225aafad8ecbbc43f3151"}],"title":"smb: client: mask server-provided mode to 07777 in modefromsid","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64379","datePublished":"2026-07-25T08:50:29.717Z","dateReserved":"2026-07-19T15:36:31.784Z","dateUpdated":"2026-07-27T05:00:07.664Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:21","lastModifiedDate":"2026-07-27 05:16:44","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":4.2}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64379","Ordinal":"1","Title":"smb: client: mask server-provided mode to 07777 in modefromsid","CVE":"CVE-2026-64379","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64379","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"smb: client: mask server-provided mode to 07777 in modefromsid"}]}}}