Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference error in generate_encryptionkey If client send two session setups with krb5 authenticate to ksmbd, null pointer dereference error in generate_encryptionkey could happen. sess->Preauth_HashValue is set to NULL if session is valid. So this patch skip generate encryption key if session is valid.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.1.148 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353Patch
- https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0ePatch
- https://git.kernel.org/stable/c/922f85e6e88fdea723a26854c3a6dcb4beb8d0b9
- https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653Patch
- https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715dePatch
- https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bbPatch
- https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57Patch
- https://www.zerodayinitiative.com/advisories/ZDI-25-917/Mailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2025-38562?
CVE-2025-38562 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference error in generate_encryptionkey If client send two session setups with krb5 authenticate to ks...
How severe is CVE-2025-38562?
CVE-2025-38562 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-38562?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.