CVE-2025-38561

ksmbd: fix Preauh_HashValue race condition

In the Linux kernel, the following vulnerability has been resolved:ksmbd: fix Preauh_HashValue race conditionIf 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.

Affected

Linux

CVSS v3.1 NVD

4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 CNA

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

CVSS v3.1 CNA

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.45% chance of exploitation in the next 30 days, 38th percentile

Published

2025-08-19

Updated

2026-08-05

Proof-of-concept exploits (1)

• toshithh/CVE-2025-385610★ · 2025-10-09

Security advisories

• https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
• https://www.zerodayinitiative.com/advisories/ZDI-25-916
• 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

References

• CVE Record
• NVD entry

Related

• CVE-2025-32433