CVE-2023-53389
Published: Sep 18, 2025
Modified: May 11, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b - < 6524d3d58797975cc40b85be1e9b89721b4e8d0baffected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b - < 3551789d0635dfb2df8ab8e7fdbf0647e9c1724caffected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b - < d1c04e338016ae2517c641806a831b1f3eee2bedaffected f70ac097a2cf5d4b67b2c1bbb73196c573ffcb7b - < 36b617f7e4ae663fcadd202ea061ca695ca75539 |
Linux | Linux | affected 6.1unaffected 0 - < 6.1unaffected 6.1.28 - <= 6.1.*unaffected 6.2.15 - <= 6.2.*unaffected 6.3.2 - <= 6.3.*+1 more versions |
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