CVE - CVE-2024-50187

CVE-ID
CVE-2024-50187	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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 However, this pointer is no longer valid because the previous process has already terminated, and all performance monitors associated with it have been destroyed and freed.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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0b2ad4f6f2bec74a5287d96cb2325a5e11706f22 URL:https://git.kernel.org/stable/c/0b2ad4f6f2bec74a5287d96cb2325a5e11706f22 MISC:https://git.kernel.org/stable/c/75452da51e2403e14be007df80d133e1443fc967 URL:https://git.kernel.org/stable/c/75452da51e2403e14be007df80d133e1443fc967 MISC:https://git.kernel.org/stable/c/937943c042503dc6087438bf3557f9057a588ba0 URL:https://git.kernel.org/stable/c/937943c042503dc6087438bf3557f9057a588ba0 MISC:https://git.kernel.org/stable/c/c9adba739d5f7cdc47a7754df4a17b47b1ecf513 URL:https://git.kernel.org/stable/c/c9adba739d5f7cdc47a7754df4a17b47b1ecf513
Assigning CNA
kernel.org
Date Record Created
20241021	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241021)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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