CVE-2023-3865

ksmbd: fix out-of-bound read in smb2_write

EPSS 0.5%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

16 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bound read in smb2_write ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read in smb2_write.

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/3813eee5154d6a4c5875cb4444cb2b63bac8947f https://git.kernel.org/stable/c/58a9c41064df27632e780c5a3ae3e0e4284957d1 https://git.kernel.org/stable/c/5fe7f7b78290638806211046a99f031ff26164e1 https://git.kernel.org/stable/c/c86211159bc3178b891e0d60e586a32c7b6a231b