Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.1, < 6.1.28 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3551789d0635dfb2df8ab8e7fdbf0647e9c1724cPatch
- https://git.kernel.org/stable/c/36b617f7e4ae663fcadd202ea061ca695ca75539Patch
- https://git.kernel.org/stable/c/6524d3d58797975cc40b85be1e9b89721b4e8d0bPatch
- https://git.kernel.org/stable/c/d1c04e338016ae2517c641806a831b1f3eee2bedPatch
FAQ
What is CVE-2023-53389?
CVE-2023-53389 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 in...
How severe is CVE-2023-53389?
CVE-2023-53389 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-53389?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.