{"id":"CVE-2026-93786","published":"2026-09-24T17:17:11.243","lastModified":"2026-09-25T13:17:19.157","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: preserve VFS inherited POSIX ACL mask\n\nThe VFS initializes a child's POSIX ACL from the parent's default ACL and\nthe requested creation mode. Do not mutate the parent ACL or overwrite the\nchild's VFS-computed access and default ACLs afterwards.\n\nThis preserves restrictive ACL_MASK entries and prevents SMB object creation\nfrom widening effective permissions.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0093909becbda22b62b39b654dbc607faed59cd0","tags":[]},{"url":"https://git.kernel.org/stable/c/591acf171644de590cda245fd8595b473a1beb70","tags":[]},{"url":"https://git.kernel.org/stable/c/e148e567a9252643baa125cb65d7ae9c2c6cf68a","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}