Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.12.92 |
References
- https://git.kernel.org/stable/c/18d8db24b0a5b7be4829238dd4022236df02d421Patch
- https://git.kernel.org/stable/c/1c9d0646a9959752f11ca1080dc1ff26bd1756cbPatch
- https://git.kernel.org/stable/c/69f030cf95488ae1186c72ac8c66fd279664ea7fPatch
- https://git.kernel.org/stable/c/f0e5c9c663badc9982e6941322eef1cb17de0f11Patch
FAQ
What is CVE-2026-64138?
CVE-2026-64138 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 valida...
How severe is CVE-2026-64138?
CVE-2026-64138 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-64138?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.