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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53378
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 11:16:38 UTC
Updated2026-07-19 11:16:38 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.001450000 probability, percentile 0.041930000 (date 2026-07-20)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected cfc27680ee208cdf7a61cda817b4158c4142595f 271059f1d9020e9ac967524e319fbbaa22d0475b git Not specified
CNA Linux Linux affected cfc27680ee208cdf7a61cda817b4158c4142595f 235b333e2878d791cee09e1e72f44611a9400114 git Not specified
CNA Linux Linux affected 6.19 Not specified
CNA Linux Linux unaffected 6.19 semver Not specified
CNA Linux Linux unaffected 7.0.9 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/271059f1d9020e9ac967524e319fbbaa22d0475b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/235b333e2878d791cee09e1e72f44611a9400114 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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