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Vulnerability DatabaseCVE-2022-49222
CVE-2022-49222:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-49222 is a vulnerability discovered in the Linux kernel's drm/bridge component, specifically in the anx7625 driver. The issue involves an overflow condition when reading EDID (Extended Display Identification Data) due to improper variable type usage. The vulnerability was fixed in February 2022 (Kernel Commit).
Technical details
The vulnerability stems from using a u8 (unsigned 8-bit) variable type for edid_pos when it should have been an int. Since EDID block length can exceed 256 bytes, using a u8 variable could lead to an overflow condition. The fix involved changing the variable type from u8 to int to properly handle larger EDID blocks (Kernel Commit).
Impact
The overflow issue could potentially affect systems using the anx7625 MIPI DSI/DPI to DP bridge driver, possibly causing display-related problems or system instability when reading EDID data (Red Hat CVE).
Mitigation and workarounds
The vulnerability was patched in the Linux kernel through a commit that changes the variable type from u8 to int. Users should update their systems to a kernel version that includes this fix (Kernel Commit).
Additional resources
Source: This report was generated using AI
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