The MITRE CVE dictionary describes this issue as:
** DISPUTED ** Integer overflow in the process_envvars function in elf/rtld.c in glibc before 2.5-rc4 might allow local users to execute arbitrary code via a large LD_HWCAP_MASK environment variable value. NOTE: the glibc maintainers state that they do not believe that this issue is exploitable for code execution.
Find out more about CVE-2007-3508 from the
MITRE CVE dictionary dictionary and
After careful analysis by Red Hat and several Glibc developers, it has been determined that this bug is not exploitable.
For more information please see Red Hat Bugzilla bug #247208