In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() In… (CVE-2024-53056)
A potential NULL pointer dereference vulnerability in the Linux kernel's drm/mediatek driver was resolved. The issue occurs in the mtk_crtc_destroy() function when a cleanup call to cmdq_pkt_destroy() is made without verifying if the cmdq_client channel pointer is NULL. This can happen if mbox_request_channel() fails during mtk_crtc_create(), leading to a NULL pointer dereference during cleanup.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's drm/mediatek driver involves a potential NULL pointer dereference in the mtk_crtc_destroy() function. Specifically, if mbox_request_channel() fails during mtk_crtc_create(), the cmdq_client channel pointer is set to NULL and cmdq_pkt_create() is not called. However, during cleanup, cmdq_pkt_destroy() is called without checking if the channel pointer is NULL, resulting in a NULL pointer dereference. This flaw has been fixed by adding a NULL check before calling cmdq_pkt_destroy().
Potential Impact
The vulnerability can cause a NULL pointer dereference leading to a denial of service (kernel crash) on affected systems. There is no impact on confidentiality or integrity. The CVSS score is 5.5 (medium severity) with attack vector local, low complexity, low privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users and administrators should apply the official kernel updates that include this patch. Since this is a kernel-level issue, upgrading to the fixed kernel version is the recommended mitigation. No additional workarounds are indicated.
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix potential NULL dereference in mtk_crtc_destroy() In… (CVE-2024-53056)
Description
A potential NULL pointer dereference vulnerability in the Linux kernel's drm/mediatek driver was resolved. The issue occurs in the mtk_crtc_destroy() function when a cleanup call to cmdq_pkt_destroy() is made without verifying if the cmdq_client channel pointer is NULL. This can happen if mbox_request_channel() fails during mtk_crtc_create(), leading to a NULL pointer dereference during cleanup.
CVSS v3.1
Score 5.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's drm/mediatek driver involves a potential NULL pointer dereference in the mtk_crtc_destroy() function. Specifically, if mbox_request_channel() fails during mtk_crtc_create(), the cmdq_client channel pointer is set to NULL and cmdq_pkt_create() is not called. However, during cleanup, cmdq_pkt_destroy() is called without checking if the channel pointer is NULL, resulting in a NULL pointer dereference. This flaw has been fixed by adding a NULL check before calling cmdq_pkt_destroy().
Potential Impact
The vulnerability can cause a NULL pointer dereference leading to a denial of service (kernel crash) on affected systems. There is no impact on confidentiality or integrity. The CVSS score is 5.5 (medium severity) with attack vector local, low complexity, low privileges required, no user interaction, and impact limited to availability.
Mitigation Recommendations
A fix for this vulnerability has been implemented in the Linux kernel. Users and administrators should apply the official kernel updates that include this patch. Since this is a kernel-level issue, upgrading to the fixed kernel version is the recommended mitigation. No additional workarounds are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5ggj-xwvc-9x57
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2024-53056"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6ac13969a43b0b3b89d5fbbb
Added to database: 10/03/2026, 17:20:41 UTC
Last enriched: 10/03/2026, 17:24:40 UTC
Last updated: 10/04/2026, 02:45:59 UTC
Views: 3
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