SB2025121053 - Memory leak in Linux kernel cifs
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB2025121053
CSH 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 vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50643)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the cifs_copy_file_range() function in fs/cifs/cifsfs.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/27cfd3afaab000a455194338db3b7f2031fde9d0
- https://git.kernel.org/stable/c/9a97df404a402fe1174d2d1119f87ff2a0ca2fe9
- https://git.kernel.org/stable/c/bf49d4fe4ab7b8d812927a2c7b514864d5fc1bb2
- https://git.kernel.org/stable/c/dc283313d1ca378d787cb55c1e580dc3de852680
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.6