Improper Update of Reference Count Affecting kernel-rt-64k-devel-matched package, versions *


Severity

Recommended
low

Based on CentOS security rating.

Threat Intelligence

EPSS
0.14% (5th percentile)

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  • Snyk IDSNYK-CENTOS9-KERNELRT64KDEVELMATCHED-18099059
  • published21 Jul 2026
  • disclosed19 Jul 2026

Introduced: 19 Jul 2026

NewCVE-2026-53378  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 kernel-rt-64k-devel-matched.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-64k-devel-matched package and not the kernel-rt-64k-devel-matched package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

drm/colorop: Fix blob property reference tracking in state lifecycle

The colorop state blob property handling had memory leaks during state duplication, destruction, and reset operations. The implementation failed to follow the established pattern from drm_crtc's handling of DEGAMMA/GAMMA blob properties.

Issues fixed:

  • drm_colorop_atomic_destroy_state() was freeing state memory without releasing the blob reference, causing a leak
  • drm_colorop_reset() was directly freeing old state with kfree() instead of properly destroying it, leaking blob references
  • drm_colorop_cleanup() had duplicate blob cleanup code

Changes:

  • Add __drm_atomic_helper_colorop_destroy_state() helper to properly release blob references before freeing state memory
  • Update drm_colorop_atomic_destroy_state() to call the helper
  • Fix drm_colorop_reset() to use drm_colorop_atomic_destroy_state() for proper cleanup of old state
  • Simplify drm_colorop_cleanup() to use the common destruction path

This matches the well-tested pattern used by drm_crtc since 2016 and ensures proper reference counting throughout the state lifecycle.

Co-developed by Claude Sonnet 4.5.

CVSS Base Scores

version 3.1