A vulnerability has been found and corrected in libglpng:

Multiple integer overflows in glpng.c in glpng 1.45 allow
context-dependent attackers to execute arbitrary code via a crafted
PNG image, related to (1) the pngLoadRawF function and (2) the pngLoadF
function, leading to heap-based buffer overflows (CVE-2010-1519).

The updated packages have been patched to correct this issue.