CyberRota Analysis
AI-GeneratedGNU coreutils uniq is vulnerable to an out-of-bounds read when processing multibyte input with the -w option, due to improper byte length calculations in the find_field() function. This flaw can lead to application crashes and potential exposure of adjacent heap memory when handling specially crafted input. Users and administrators of systems utilizing GNU coreutils should prioritize applying the fix to mitigate the risk of exploitation.
Original NVD Description
GNU coreutils uniq is vulnerable to an out‑of‑bounds read due to incorrect handling of multibyte input when the -w (--check-chars) option is used. The find_field() function miscalculates the byte length of characters by repeatedly processing a fixed pointer instead of advancing through the input, resulting in an inflated length value. This incorrect length is later used in a memcmp operation, causing reads beyond the allocated buffer when processing crafted multibyte input. When running GNU coreutils uniq with attacker-provided arguments, this behavior leads to a crash and potential adjacent heap memory exposure. This issue has been fixed in the commit d64e35a8a4c0e4608321433e0d84d917e4e36371.