SB2025091693 - Memory leak in Linux kernel xen driver
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091693
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-2022-50257)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the gntdev_map_grant_pages() and __unmap_grant_pages_done() functions in drivers/xen/gntdev.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/0991028cd49567d7016d1b224fe0117c35059f86
- https://git.kernel.org/stable/c/0bccddd9b8f03ad57bb738f0d3da8845d4e1e579
- https://git.kernel.org/stable/c/1cb73704cb4778299609634a790a80daba582f7d
- https://git.kernel.org/stable/c/273f6a4f71be12e2ec80a4919837d6e4fa933a04
- https://git.kernel.org/stable/c/3d056d81b93a787613eda44aeb21fc14c3392b34
- https://git.kernel.org/stable/c/49bb053b1ec367b6883030eb2cca696e91435679
- https://git.kernel.org/stable/c/49db6cb81400ba863e1a85e55fcdf1031807c23f
- https://git.kernel.org/stable/c/b043f2cab100bed3e0a999dcf38cc05b1e4a7e41
- https://git.kernel.org/stable/c/cb1ccfe7655380f77a58b340072f5f40bc285902
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.264