SB2025122667 - Memory leak in Linux kernel vhost driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025122667
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-2022-50738)
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 DEFINE_IDA(), vhost_vdpa_remove_as() and vhost_vdpa_cleanup() functions in drivers/vhost/vdpa.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/4e92cb33bfb51eee5f28bb10846c46f266a4bb67
- https://git.kernel.org/stable/c/a2907867e2c86067accd2f011d6f23ee5533aa6c
- https://git.kernel.org/stable/c/c070c1912a83432530cbb4271d5b9b11fa36b67a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2