LIBPNG is a reference library for use in applications that read, create, and manipulate PNG (Portable Network Graphics) raster image files. Prior to 1.6.52, an out-of-bounds read vulnerability in libpng's simplified API allows reading up to 1012 bytes beyond the png_sRGB_base[512] array when processing valid palette PNG images with partial transparency and gamma correction. The PNG files that trigger this vulnerability are valid per the PNG specification; the bug is in libpng's internal state management. Upgrade to libpng 1.6.52 or later.
Exploitability
AV:NAC:LPR:NUI:RScope
S:UImpact
C:LI:NA:H7.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:HMemory Safety