pngrtran.c in libpng before 1.0.29 and 1.2.x before 1.2.21 use (1) logical instead of bitwise operations and (2) incorrect comparisons, which might allow remote attackers to cause a denial of service (crash) via a crafted PNG image.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.172
EPSS Ranking 94.6%