CVE-2025-38562

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.

Score

CVSS 3.1 5.5 Medium

Status

Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-08-19

Last modified

2026-05-11

Weaknesses

CWE-476

Affected products

• Debian Linux (Debian)
• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353
• https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0e
• https://git.kernel.org/stable/c/922f85e6e88fdea723a26854c3a6dcb4beb8d0b9
• https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653
• https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715de
• https://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bb
• https://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57
• https://www.zerodayinitiative.com/advisories/ZDI-25-917/
• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html