The MITRE CVE dictionary describes this issue as:
Array index error in the make_table function in unlzh.c in the LZH decompression component in gzip 1.3.5, when running on certain platforms, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted GZIP archive that triggers an out-of-bounds write, aka a "stack modification vulnerability."
Find out more about CVE-2006-4335 from the
MITRE CVE dictionary dictionary and
Red Hat no longer plans to fix this issue in lha for Red Hat Enterprise Linux 4.