Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix null pointer dereference in alloc_preauth_hash() The Client send malformed smb2 negotiate request. ksmbd return error response. Subsequently, the client can send smb2 session setup even thought conn->preauth_info is not allocated. This patch add KSMBD_SESS_NEED_SETUP status of connection to ignore session setup request if smb2 negotiate phase is not complete.
References (6)
Core 6
Core References
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-25-310/
Scores
CVSS v3
5.5
EPSS
0.2328
EPSS Percentile
97.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-476
Status
published
Products (17)
linux/Kernel
5.15.0 - 6.6.107linux
linux/Kernel
6.13.0 - 6.13.11linux
linux/Kernel
6.14.0 - 6.14.2linux
linux/Kernel
6.7.0 - 6.12.23linux
Linux/Linux
< 5.15
Linux/Linux
0626e6641f6b467447c81dd7678a69c66f7746cf - 8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d
Linux/Linux
0626e6641f6b467447c81dd7678a69c66f7746cf - b8eb243e670ecf30e91524dd12f7260dac07d335
Linux/Linux
0626e6641f6b467447c81dd7678a69c66f7746cf - c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780
Linux/Linux
0626e6641f6b467447c81dd7678a69c66f7746cf - ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad
Linux/Linux
0626e6641f6b467447c81dd7678a69c66f7746cf - cce57cd8c5dead24127cf2308fdd60fcad2d6ba6
... and 7 more
Published
Apr 16, 2025
Tracked Since
Feb 18, 2026