libpng: LIBPNG heap buffer overflow via malformed palette index

A heap buffer over-read vulnerability exists in libpng's pngdoquantize function when processing PNG files with malformed palette indices. The vulnerability occurs when palettelookup array bounds are not validated against externally-supplied image data, allowing an attacker to craft a PNG file wit...

CLSA-2025-1766165929 libpng: Fix of CVE-2025-64505

CVE-2025-64505: fix heap buffer over-read vulnerability in pngdoquantize function by validating palettelookup array bounds...