SB2025040230 - Memory leak in Linux kernel drm hyperv driver
Published: April 2, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025040230
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-2025-21978)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the hyperv_vmbus_probe() and hyperv_vmbus_remove() functions in drivers/gpu/drm/hyperv/hyperv_drm_drv.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/158242b56bf465a73e1edeac0fe828a8acad4499
- https://git.kernel.org/stable/c/24f1bbfb2be77dad82489c1468bbb14312aab129
- https://git.kernel.org/stable/c/ad27b4a51495490b815580d9b935e8eee14d1a9c
- https://git.kernel.org/stable/c/aed709355fd05ef747e1af24a1d5d78cd7feb81e
- https://git.kernel.org/stable/c/c40cd24bfb9bfbb315c118ca14ebe6cf52e2dd1e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.132