CVE-2025-22037
ksmbd: fix null pointer dereference in alloc_preauth_hash()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 16, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
0626e6641f6b467447c81dd7678a69c66f7746cf < cce57cd8c5dead24127cf2308fdd60fcad2d6ba6 0626e6641f6b467447c81dd7678a69c66f7746cf < ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad 0626e6641f6b467447c81dd7678a69c66f7746cf < 8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d 0626e6641f6b467447c81dd7678a69c66f7746cf < b8eb243e670ecf30e91524dd12f7260dac07d335 0626e6641f6b467447c81dd7678a69c66f7746cf < c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780
Linux / Linux
5.15
References
git.kernel.org: https://git.kernel.org/stable/c/cce57cd8c5dead24127cf2308fdd60fcad2d6ba6 git.kernel.org: https://git.kernel.org/stable/c/ca8bed31edf728a662ef9d6f39f50e7a7dc2b5ad git.kernel.org: https://git.kernel.org/stable/c/8f216b33a5e1b3489c073b1ea1b3d7cb63c8dc4d git.kernel.org: https://git.kernel.org/stable/c/b8eb243e670ecf30e91524dd12f7260dac07d335 git.kernel.org: https://git.kernel.org/stable/c/c8b5b7c5da7d0c31c9b7190b4a7bba5281fc4780 zerodayinitiative.com: https://www.zerodayinitiative.com/advisories/ZDI-25-310/