CVE-2022-50847
Unknown Unknown - Not Provided

Null Pointer Dereference in Linux it6505 DRM Bridge Driver

Publication date: 2025-12-30

Last updated on: 2025-12-30

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: it6505: Initialize AUX channel in it6505_i2c_probe During device boot, the HPD interrupt could be triggered before the DRM subsystem registers it6505 as a DRM bridge. In such cases, the driver tries to access AUX channel and causes NULL pointer dereference. Initializing the AUX channel earlier to prevent such error.

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Meta Information

Published
2025-12-30
Last Modified
2025-12-30
Generated
2026-07-06
AI Q&A
2025-12-30
EPSS Evaluated
2026-07-05
NVD
CVE-2022-50847
EUVD
EUVD-2022-55851

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
linux kernel *
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability occurs in the Linux kernel's drm/bridge it6505 driver. During device boot, the HPD interrupt may be triggered before the DRM subsystem registers the it6505 as a DRM bridge. When this happens, the driver attempts to access the AUX channel without it being initialized, causing a NULL pointer dereference error. The fix involves initializing the AUX channel earlier to prevent this error.

Impact Analysis

The vulnerability can cause a NULL pointer dereference in the Linux kernel driver, which may lead to a system crash or instability during device boot. This could result in denial of service or unexpected behavior of the display subsystem.

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