CVE-2025-38561

ksmbd: fix Preauh_HashValue race condition

CVSS 8.5 HIGHEPSS 0.4%CWE-362

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.5EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Preauh_HashValue race condition If client send multiple session setup requests to ksmbd, Preauh_HashValue race condition could happen. There is no need to free sess->Preauh_HashValue at session setup phase. It can be freed together with session at connection termination phase.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Linux · Linux

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References

https://git.kernel.org/stable/c/44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6 https://git.kernel.org/stable/c/6613887da1d18dd2ecfd6c6148a873c4d903ebdc https://git.kernel.org/stable/c/7d7c0c5304c88bcbd7a85e9bcd61d27e998ba5fc https://git.kernel.org/stable/c/b69fd87076daa66f3d186bd421a7b0ee0cb45829 https://git.kernel.org/stable/c/edeecc7871e8fc0878d53ce286c75040a0e38f6c https://git.kernel.org/stable/c/fbf5c0845ed15122a770bca9be1d9b60b470d3aa https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html https://www.zerodayinitiative.com/advisories/ZDI-25-916/