CVE-2022-38529: 
Linux Debian vulnerability analysis and mitigation

tinyexr commit 0647fb3 was discovered to contain a heap-buffer overflow vulnerability via the component rleUncompress. The vulnerability was identified on July 6, 2022 and tracked as CVE-2022-38529 (MITRE).

The vulnerability exists in the rleUncompress function within tinyexr.h. When parsing specially crafted input, the function performs a read operation that exceeds the bounds of an allocated 951-byte buffer region, resulting in a heap-buffer overflow condition. The issue occurs at line 1522 of tinyexr.h during the decompression process (GitHub Issue).

A successful exploitation of this vulnerability could allow an attacker to cause memory corruption, potentially leading to program crashes or arbitrary code execution. The vulnerability affects systems using the affected version of tinyexr library (MITRE).

The vulnerability can be triggered by processing specially crafted input files. A proof of concept (PoC) has been demonstrated using Address Sanitizer (ASAN) on Ubuntu 16.04.7 LTS with gcc version 5.4.0 (GitHub Issue).

Users should update to a patched version of tinyexr that addresses this vulnerability. The issue was similar to a previous vulnerability (issue #112) that was partially fixed in patch 58a6258, but the fix was not complete (GitHub Issue).