5.5

CVE-2023-53389

drm/mediatek: dp: Only trigger DRM HPD events if bridge is attached

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.1 < 6.1.28
Linux ≫ Linux Kernel Version >= 6.2 < 6.2.15
Linux ≫ Linux Kernel Version >= 6.3 < 6.3.2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.033
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/6524d3d58797975cc40b85be1e9b89721b4e8d0b
Patch
https://git.kernel.org/stable/c/3551789d0635dfb2df8ab8e7fdbf0647e9c1724c
Patch
https://git.kernel.org/stable/c/d1c04e338016ae2517c641806a831b1f3eee2bed
Patch
https://git.kernel.org/stable/c/36b617f7e4ae663fcadd202ea061ca695ca75539
Patch