CVE-2026-53141
Received Received - Intake
Reference Counting Flaw in Linux Kernel's DRM V3D Driver

Publication date: 2026-06-25

Last updated on: 2026-06-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/v3d: Fix global performance monitor reference counting In the SET_GLOBAL ioctl, v3d_perfmon_find() bumps the reference count on the perfmon it returns, but v3d_perfmon_set_global_ioctl() and v3d_perfmon_delete() fail to release that reference on several paths: 1. v3d_perfmon_set_global_ioctl() leaks the reference on its error paths. 2. CLEAR_GLOBAL leaks both the find reference and the reference previously stashed in v3d->global_perfmon by the SET_GLOBAL ioctl that configured it. 3. Destroying a perfmon that is the current global perfmon leaks the reference stashed by the SET_GLOBAL ioctl. Release each of these references explicitly.
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Meta Information
Published
2026-06-25
Last Modified
2026-06-25
Generated
2026-06-25
AI Q&A
2026-06-25
EPSS Evaluated
N/A
NVD
CVE-2026-53141
EUVD
EUVD-2026-39232
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's drm/v3d component related to the global performance monitor reference counting.

Specifically, in the SET_GLOBAL ioctl, the function v3d_perfmon_find() increases the reference count on the performance monitor it returns. However, the functions v3d_perfmon_set_global_ioctl() and v3d_perfmon_delete() fail to properly release these references in several scenarios.

  • v3d_perfmon_set_global_ioctl() leaks the reference on its error paths.
  • The CLEAR_GLOBAL operation leaks both the reference found and the reference previously stored by the SET_GLOBAL ioctl.
  • Destroying a performance monitor that is currently set as the global performance monitor leaks the reference stored by the SET_GLOBAL ioctl.

The fix involves explicitly releasing each of these leaked references to prevent resource leaks.

Impact Analysis

This vulnerability can lead to resource leaks in the Linux kernel's performance monitoring subsystem.

Leaking references means that certain resources are not properly freed, which can cause increased memory usage or resource exhaustion over time.

In practical terms, this could degrade system performance or stability, especially on systems that heavily use the drm/v3d performance monitoring features.

Mitigation Strategies

The vulnerability has been resolved by fixing the reference counting in the drm/v3d component of the Linux kernel. To mitigate this vulnerability, you should update your Linux kernel to a version that includes this fix.

Specifically, ensure your system is running a kernel version released after 2026-06-25 that addresses the reference counting leaks in the v3d_perfmon_set_global_ioctl(), CLEAR_GLOBAL, and perfmon destruction paths.

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