5.5

CVE-2025-38562

ksmbd: fix null pointer dereference error in generate_encryptionkey

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15 < 6.1.148
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.102
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.42
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.10
Linux ≫ Linux Kernel Version >= 6.16 < 6.16.1
Debian ≫ Debian Linux Version11.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 7.14% 0.935
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

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