CVE-2024-44977: 
Linux Kernel vulnerability analysis and mitigation

CVE-2024-44977 is a vulnerability in the Linux kernel's AMD GPU driver (drm/amdgpu) that was discovered and disclosed in September 2024. The vulnerability relates to missing validation of TA binary size in the AMD GPU driver, which could lead to an out-of-bounds write condition. This issue affects multiple versions of the Linux kernel up to versions 6.1.107, 6.6.48, and 6.10.7 (NVD).

The vulnerability exists in the AMD GPU driver's TA (Trusted Application) binary handling functionality. The issue stems from a lack of size validation before processing TA binary data, which could potentially lead to an out-of-bounds write condition. The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (High), with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating local access requirements but high impact potential (NVD).

The vulnerability could allow an attacker with local access to potentially execute an out-of-bounds write operation, which could lead to system compromise through memory corruption. The high CVSS score indicates that successful exploitation could result in a complete compromise of system confidentiality, integrity, and availability (NVD).

The vulnerability has been fixed through a patch that adds TA binary size validation to prevent out-of-bounds write operations. The fix has been implemented in various Linux kernel versions, including 6.8.0-50.51 for Ubuntu 24.04 LTS and similar versions for other distributions. The patch specifically adds a size check to validate that the TA binary length does not exceed PSP1MEG before processing (Kernel Patch).