SB2025091972 - Use-after-free in Linux kernel smb client
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091972
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-2023-53377)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the smb2_compound_op() function in fs/smb/client/smb2inode.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/33f736187d08f6bc822117629f263b97d3df4165
- https://git.kernel.org/stable/c/4fe07d55a5461e66a55fbefb57f85ff0facea32b
- https://git.kernel.org/stable/c/b6353518ef8180816e863aa23b06456f395404d6
- https://git.kernel.org/stable/c/d017880782cf71f8820ee4a2002843893176501d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.4