CVE-2026-93786 — ksmbd: preserve VFS inherited POSIX ACL mask
In the Linux kernel, the following vulnerability has been resolved: ksmbd: preserve VFS inherited POSIX ACL mask The VFS initializes a child's POSIX ACL from the parent's defa…
Published: 2026-09-24 · CVSS: 8.1 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: ksmbd: preserve VFS inherited POSIX ACL mask The VFS initializes a child's POSIX ACL from the parent's default ACL and the requested creation mode. Do not mutate the parent ACL or overwrite the child's VFS-computed access and default ACLs afterwards. This preserves restrictive ACL_MASK entries and prevents SMB object creation from widening effective permissions.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7