SB2025061944 - Memory leak in Linux kernel cifs
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025061944
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50076)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the cifs_close_deferred_file(), cifs_close_all_deferred_files() and cifs_close_deferred_file_under_dentry() functions in fs/cifs/misc.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5
- https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69e
- https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.63
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0