CVE-2026-53378
Received Received - Intake

Memory Leak in Linux Kernel DRM Colorop State Handling

Publication date: 2026-07-19

Last updated on: 2026-07-19

Assigner: kernel.org

Description
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.

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Meta Information

Published
2026-07-19
Last Modified
2026-07-19
Generated
2026-07-20
AI Q&A
2026-07-19
EPSS Evaluated
N/A
NVD
CVE-2026-53378
EUVD
EUVD-2026-45451

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
linux linux_kernel to 4.5 (inc)
linux linux_kernel *
linux_kernel linux_kernel *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves improper handling of memory for color operation state blobs. It causes memory leaks during state duplication, destruction, and reset operations because the code fails to properly release blob references before freeing memory.

Detection Guidance

This vulnerability is specific to the Linux kernel's DRM colorop subsystem and requires kernel-level inspection. Detection involves checking for memory leaks in the DRM subsystem related to colorop state handling. Use kernel logs for memory leak warnings or run 'dmesg | grep -i colorop' to check for related errors. Kernel debugging tools like 'kmemleak' or 'slabtop' may help identify memory leaks in the DRM subsystem.

Impact Analysis

The vulnerability could lead to memory exhaustion on systems using affected Linux kernel components. This may cause system instability, crashes, or degraded performance over time due to unreleased memory resources.

Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it is a memory leak issue in the Linux kernel's colorop state blob property handling. The impact is limited to potential system instability or resource exhaustion rather than data privacy or security breaches.

Mitigation Strategies

Apply the latest kernel patches or updates that include the fix for this vulnerability. Reboot the system after applying updates to ensure the patched kernel is active. Monitor kernel logs for any residual issues post-update. If custom kernel builds are used, ensure they include the upstream fix for proper DRM colorop state handling.

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