CVE-2026-93282 Linux kernel ksmbd - Broken Access Control

Linux kernel ksmbd contains an access control vulnerability caused by improper handling of Authenticated Users ACE in DACL permission checks, letting authenticated users face incorrect access denial or unauthorized access, exploit requires authenticated session.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.31% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
24 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the ksmbd fix for maximum allowed access checks.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs