{"id":"CVE-2026-64379","summary":"smb: client: mask server-provided mode to 07777 in modefromsid","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.","modified":"2026-07-28T04:03:00.939232027Z","published":"2026-07-25T08:50:29.717Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64379.json","cna_assigner":"Linux"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e2f8fbfb8d09c06decde162090fac3ee220aa280"},{"fixed":"5f6f2241034f189c69d4d0b5f8fe24a0c25b0c14"},{"fixed":"ee2216dbdf0c677e89bb43e03247dba590ed00ef"},{"fixed":"f511807feee7cb29b61bdfa86472c7e9e2e5df94"},{"fixed":"08c600b7e1818539ba5efee4cdb06215c245ca78"},{"fixed":"b84e002e0df26bbc6cbd3ca01b8212601fe0ae7d"},{"fixed":"c6c484a7d5bff6b929a86d7ed5130f29834c6a0d"},{"fixed":"f80add1bfb3425100a325b14f19648e75669a954"},{"fixed":"e3d9c7160d483fc8f9e225aafad8ecbbc43f3151"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64379.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","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"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64379.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H"}]}