SB20250402127 - Resource management error in Linux kernel video fbdev driver
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250402127
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) Resource management error (CVE-ID: CVE-2025-21976)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the hvfb_putmem(), hvfb_ops_damage_area(), hvfb_probe() and hvfb_remove() functions in drivers/video/fbdev/hyperv_fb.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/4545e2aa121aea304d33903099c03e29ed4fe50a
- https://git.kernel.org/stable/c/a7b583dc99c6cf4a96877017be1d08247e1ef2c7
- https://git.kernel.org/stable/c/ea2f45ab0e53b255f72c85ccd99e2b394fc5fceb
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14