SB2025040241 - Use-after-free in Linux kernel smb server
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025040241
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-2025-21945)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the list_del() function in fs/smb/server/smb2pdu.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/410ce35a2ed6d0e114132bba29af49b69880c8c7
- https://git.kernel.org/stable/c/636e021646cf9b52ddfea7c809b018e91f2188cb
- https://git.kernel.org/stable/c/84d2d1641b71dec326e8736a749b7ee76a9599fc
- https://git.kernel.org/stable/c/8573571060ca466cbef2c6f03306b2cc7b883506
- https://git.kernel.org/stable/c/a0609097fd10d618aed4864038393dd75131289e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.19