Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Stop the active perfmon before being destroyed Upon closing the file descriptor, the active performance monitor is not stopped. Although all perfmons are destroyed in `vc4_perfmon_close_file()`, the active performance monitor's pointer (`vc4->active_perfmon`) is still retained. If we open a new file descriptor and submit a few jobs with performance monitors, the driver will attempt to stop the active performance monitor using the stale pointer in `vc4->active_perfmon`. However, this pointer is no longer valid because the previous process has already terminated, and all performance monitors associated with it have been destroyed and freed. To fix this, when the active performance monitor belongs to a given process, explicitly stop it before destroying and freeing it.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.17, < 6.1.113 |
References
- https://git.kernel.org/stable/c/0b2ad4f6f2bec74a5287d96cb2325a5e11706f22Patch
- https://git.kernel.org/stable/c/75452da51e2403e14be007df80d133e1443fc967Patch
- https://git.kernel.org/stable/c/937943c042503dc6087438bf3557f9057a588ba0Patch
- https://git.kernel.org/stable/c/c9adba739d5f7cdc47a7754df4a17b47b1ecf513Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
FAQ
What is CVE-2024-50187?
CVE-2024-50187 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Stop the active perfmon before being destroyed Upon closing the file descriptor, the active performance monitor is not st...
How severe is CVE-2024-50187?
CVE-2024-50187 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-50187?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.