CVE-2026-53378

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{"bugzilla": {"description": "kernel: drm/colorop: Fix blob property reference tracking in state lifecycle", "id": "2502185", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502185"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/colorop: Fix blob property reference tracking in state lifecycle\nThe colorop state blob property handling had memory leaks during state\nduplication, destruction, and reset operations. The implementation\nfailed to follow the established pattern from drm_crtc's handling of\nDEGAMMA/GAMMA blob properties.\nIssues fixed:\n- drm_colorop_atomic_destroy_state() was freeing state memory without\nreleasing the blob reference, causing a leak\n- drm_colorop_reset() was directly freeing old state with kfree()\ninstead of properly destroying it, leaking blob references\n- drm_colorop_cleanup() had duplicate blob cleanup code\nChanges:\n- Add __drm_atomic_helper_colorop_destroy_state() helper to properly\nrelease blob references before freeing state memory\n- Update drm_colorop_atomic_destroy_state() to call the helper\n- Fix drm_colorop_reset() to use drm_colorop_atomic_destroy_state()\nfor proper cleanup of old state\n- Simplify drm_colorop_cleanup() to use the common destruction path\nThis matches the well-tested pattern used by drm_crtc since 2016 and\nensures proper reference counting throughout the state lifecycle.\nCo-developed by Claude Sonnet 4.5.", "A flaw was found in the Linux kernel's Direct Rendering Manager (DRM) color operation module (drm/colorop). This vulnerability arises from improper reference tracking of blob properties during state duplication, destruction, and reset operations. An attacker with local access could potentially exploit this to cause memory leaks, which may lead to system instability or a denial of service over time."], "name": "CVE-2026-53378", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-53378\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-53378\nhttps://lore.kernel.org/linux-cve-announce/2026071947-CVE-2026-53378-d41e@gregkh/T"], "threat_severity": "Low"}

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