cve/2021/CVE-2021-42327.md

CVE-2021-42327

Description

dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel through 5.14.14 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.

POC

Reference

No PoCs from references.

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/NaInSec/CVE-PoC-in-GitHub
• https://github.com/SYRTI/POC_to_review
• https://github.com/WhooAmii/POC_to_review
• https://github.com/docfate111/CVE-2021-42327
• https://github.com/kdn111/linux-kernel-exploitation
• https://github.com/khanhdn111/linux-kernel-exploitation
• https://github.com/khanhdz-06/linux-kernel-exploitation
• https://github.com/khanhdz191/linux-kernel-exploitation
• https://github.com/khanhhdz/linux-kernel-exploitation
• https://github.com/khanhhdz06/linux-kernel-exploitation
• https://github.com/khanhnd123/linux-kernel-exploitation
• https://github.com/khnhdz/linux-kernel-exploitation
• https://github.com/knd06/linux-kernel-exploitation
• https://github.com/ndk06/linux-kernel-exploitation
• https://github.com/ndk191/linux-kernel-exploitation
• https://github.com/nomi-sec/PoC-in-GitHub
• https://github.com/soosmile/POC
• https://github.com/ssr-111/linux-kernel-exploitation
• https://github.com/trhacknon/Pocingit
• https://github.com/wkhnh06/linux-kernel-exploitation
• https://github.com/xairy/linux-kernel-exploitation
• https://github.com/zecool/cve