Mandriva Linux Security Advisory MDKSA-2006-140 – Tavis Ormandy, of the Google Security Team, discovered that ncompress, when uncompressing data, performed no bounds checking, which could allow a specially crafted datastream to underflow a .bss buffer with attacker controlled data.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/49238/MDKSA-2006-140.txt
Source: https://packetstormsecurity.com/files/49238/Mandriva-Linux-Security-Advisory-2006.140.html