CVE-2023-53389
Severity CVSS v4.0:
Pending analysis
Type:
CWE-476
NULL Pointer Dereference
Publication date:
18/09/2025
Last modified:
14/01/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
drm/mediatek: dp: Only trigger DRM HPD events if bridge is attached<br />
<br />
The MediaTek DisplayPort interface bridge driver starts its interrupts<br />
as soon as its probed. However when the interrupts trigger the bridge<br />
might not have been attached to a DRM device. As drm_helper_hpd_irq_event()<br />
does not check whether the passed in drm_device is valid or not, a NULL<br />
pointer passed in results in a kernel NULL pointer dereference in it.<br />
<br />
Check whether the bridge is attached and only trigger an HPD event if<br />
it is.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.1 (including) | 6.1.28 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2 (including) | 6.2.15 (excluding) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.3 (including) | 6.3.2 (excluding) |
To consult the complete list of CPE names with products and versions, see this page