CVE-2026-93786

high

Description

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.

References

https://git.kernel.org/stable/c/e148e567a9252643baa125cb65d7ae9c2c6cf68a

https://git.kernel.org/stable/c/591acf171644de590cda245fd8595b473a1beb70

https://git.kernel.org/stable/c/0093909becbda22b62b39b654dbc607faed59cd0

Details

Source: Mitre, NVD

Published: 2026-09-24

Updated: 2026-09-25

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Severity: High

EPSS

EPSS: 0.0033