CVE-2025-38561
CRITICAL severity · CVSS 9.8 · CWE-362
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6Patch
- https://git.kernel.org/stable/c/6613887da1d18dd2ecfd6c6148a873c4d903ebdcPatch
- https://git.kernel.org/stable/c/7d7c0c5304c88bcbd7a85e9bcd61d27e998ba5fcPatch
- https://git.kernel.org/stable/c/b69fd87076daa66f3d186bd421a7b0ee0cb45829Patch
- https://git.kernel.org/stable/c/edeecc7871e8fc0878d53ce286c75040a0e38f6cPatch
- https://git.kernel.org/stable/c/fbf5c0845ed15122a770bca9be1d9b60b470d3aaPatch
- https://www.zerodayinitiative.com/advisories/ZDI-25-916/Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlAdvisory