CVE-2026-64138
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate SID in parent security descriptor during ACL inheritance Introduce smb_validate_ntsd_sid() helper to safely validate Owner SID and Group SID inside the NT Security Descriptor (smb_ntsd) retrieved from the parent directory.
- Published Jul 19, 2026
- CVSS 8.8 high
- 0.6% chance of exploitation in the next 30 days (EPSS)
- A fix is available