Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.1.114 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0f62358ce85b2d4c949ef1b648be01b29cec667a
- https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08Patch
- https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930Patch
- https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2cPatch
- https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0dPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
FAQ
What is CVE-2024-50086?
CVE-2024-50086 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will c...
How severe is CVE-2024-50086?
CVE-2024-50086 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2024-50086?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.