High severity7.5NVD Advisory· Published Apr 16, 2025· Updated Jul 30, 2026
CVE-2025-22037
CVE-2025-22037
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.
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Affected products
4Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4dnvdPatch
- git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335nvdPatch
- git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780nvdPatch
- git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5adnvdPatch
- git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6nvd
- www.zerodayinitiative.com/advisories/ZDI-25-310/nvd
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