Buffer overflow in the readImageData function in giftopnm.c in netpbm before 10.27 in netpbm before 10.27 allows remote user-assisted attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted GIF image, a similar issue to CVE-2006-4484.

pamperspective in Netpbm before 10.35.48 does not properly calculate a window height, which allows context-dependent attackers to cause a denial of service (crash) via a crafted image file that triggers an out-of-bounds read.