ksmbd: fix null pointer dereference error in generate_encryptionkey
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 7.6%
exploitation probability
7.6%top 6% of all CVEs
observed exploitation
nono source reports it
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 · LinuxReferences
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/