SB20250502141 - Use-after-free in Linux kernel smb server
Published: May 2, 2025 Updated: May 10, 2025
Security Bulletin ID
SB20250502141
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-2025-37776)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the free_opinfo(), opinfo_get_list(), opinfo_put(), opinfo_add(), opinfo_del() and smb_break_all_levII_oplock() functions in fs/smb/server/oplock.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/18b4fac5ef17f77fed9417d22210ceafd6525fc7
- https://git.kernel.org/stable/c/296cb5457cc6f4a754c4ae29855f8a253d52bcc6
- https://git.kernel.org/stable/c/d54ab1520d43e95f9b2e22d7a05fc9614192e5a5
- https://git.kernel.org/stable/c/d73686367ad68534257cd88a36ca3c52cb8b81d8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.4