Linux ksmbd out-of-bounds read can leak information
CVE-2026-64138 requires authentication and affects only systems with ksmbd enabled.
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Vulnerability1 · 1 read
CVE-2026-64138
- CVSS 3.1
- 8.8 high
- EPSS
- <1%p35
- Published
- ·
- Modified
Description · NVD
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.