CVE-2022-50847
Null Pointer Dereference in Linux it6505 DRM Bridge Driver
Publication date: 2025-12-30
Last updated on: 2025-12-30
Assigner: kernel.org
Description
Description
CVSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | kernel | * |
| linux | linux_kernel | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.