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CVE-2025-38562

ksmbd: fix null pointer dereference error in generate_encryptionkey

EPSS 7.1%
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.
Affected products
Linux · Linux

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References
https://git.kernel.org/stable/c/015ef163d65496ae3ba6192c96140a22743f0353https://git.kernel.org/stable/c/2a30ed6428ce83afedca1a6c5c5c4247bcf12d0ehttps://git.kernel.org/stable/c/922f85e6e88fdea723a26854c3a6dcb4beb8d0b9https://git.kernel.org/stable/c/96a82e19434a2522525baab59c33332658bc7653https://git.kernel.org/stable/c/9b493ab6f35178afd8d619800df9071992f715dehttps://git.kernel.org/stable/c/9c2dbbc959e1fcc6f603a1a843e9cf743ba383bbhttps://git.kernel.org/stable/c/d79c8bebaa622ee223128be7c66d8aaeeb634a57https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlhttps://www.zerodayinitiative.com/advisories/ZDI-25-917/