The load function in the XPM loader for imlib2 1.4.2, and possibly other versions, allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted XPM file that triggers a "pointer arithmetic error" and a heap-based buffer overflow, a different vulnerability than CVE-2008-2426.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.