linux: In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: dp: Only trigger DRM HPD events if...
CVE-2023-53389 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53389, released September 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: dp: Only trigger DRM HPD events if bridge is attached The MediaTek DisplayPort interface bridge driver starts its interrupts as soon as its probed. However when the interrupts trigger the bridge might not have been attached to a DRM device. As drm_helper_hpd_irq_event() does not check whether the passed in drm_device is valid or not, a NULL pointer passed in results in a kernel NULL pointer dereference in it. Check whether the bridge is attached and only trigger an HPD event if it is.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.37-1 | DEBIAN-CVE-2023-53389 | Sep 18, 2025 |
| linux · Debian 13.5 (trixie) | 6.3.7-1 | DEBIAN-CVE-2023-53389 | Sep 18, 2025 |
| linux · Debian 14 | 6.3.7-1 | DEBIAN-CVE-2023-53389 | Sep 18, 2025 |
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