xloadimage before 4.1-r2, and xli before 1.17, allows attackers to execute arbitrary commands via shell metacharacters in filenames for compressed images, which are not properly quoted when calling the gunzip command.

scan.c for LibXPM may allow attackers to execute arbitrary code via a negative bitmapunit value that leads to a buffer overflow.

Multiple vulnerabilities in xli before 1.17 may allow remote attackers to execute arbitrary code via "buffer management errors" from certain image properties, some of which may be related to integer overflows in PPM files.

The patch for integer overflow vulnerabilities in Xpdf 2.0 and 3.0 (CVE-2004-0888) is incomplete for 64-bit architectures on certain Linux distributions such as Red Hat, which could leave Xpdf users exposed to the original vulnerabilities.

Heap corruption vulnerability in the "at" program allows local users to execute arbitrary code via a malformed execution time, which causes at to free the same memory twice.