SB2025052105 - Use-after-free in Linux kernel server mgmt
Published: May 21, 2025 Updated: May 21, 2025
Security Bulletin ID
SB2025052105
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-37926)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ksmbd_session_rpc_clear_list(), ksmbd_session_rpc_open(), ksmbd_session_rpc_close() and __session_create() functions in fs/smb/server/mgmt/user_session.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/6323fec65fe54b365961fed260dd579191e46121
- https://git.kernel.org/stable/c/8fb3b6c85b7e3127161623586b62abcc366caa20
- https://git.kernel.org/stable/c/a1f46c99d9ea411f9bf30025b912d881d36fc709
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.28
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.6