CVE-2024-50187 (GCVE-0-2024-50187)
Vulnerability from cvelistv5
Published
2024-11-08 05:38
Modified
2026-08-05 11:42
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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 However, this pointer is no longer valid because the previous process has already terminated, and all performance monitors associated with it have been destroyed and freed.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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 65101d8c9108201118efa7e08f4e2c57f438deb9
Version: 65101d8c9108201118efa7e08f4e2c57f438deb9
Version: 65101d8c9108201118efa7e08f4e2c57f438deb9
Version: 65101d8c9108201118efa7e08f4e2c57f438deb9
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