CVE-2025-37899

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in session logoff The sess->user object can currently be in use by another thread, for example if another connection has sent a session setup request to bind to the session being free'd. The handler for that connection could be in the smb2_sess_setup function which makes use of sess->user.

• CWE-416

• https://git.kernel.org/stable/c/02d16046cd11a5c037b28c12ffb818c56dd3ef43Patch
• https://git.kernel.org/stable/c/2fc9feff45d92a92cd5f96487655d5be23fb7e2bPatch
• https://git.kernel.org/stable/c/70ad6455139e26e85f48f95d0e21f351c1909342
• https://git.kernel.org/stable/c/931dc8a3670f71c45c0b1379ea4e92dafbda1aca
• https://git.kernel.org/stable/c/d5ec1d79509b3ee01de02c236f096bc050221b7fPatch
• https://news.ycombinator.com/item?id=44081338Exploit, Issue Tracking, Third Party Advisory
• https://sean.heelan.io/2025/05/22/how-i-used-o3-to-find-cve-2025-37899-a-remote-zeroday-vulnerability-in-the-linux-kernels-smb-implementation/Exploit, Third Party Advisory

Published

May 20, 2025

Last Modified

Jul 30, 2026

Status

Modified

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