(RHSA-2010:0787) Important: glibc security update

The glibc packages contain the standard C libraries used by multiple
programs on the system. These packages contain the standard C and the
standard math libraries. Without these two libraries, a Linux system cannot
function properly.

It was discovered that the glibc dynamic linker/loader did not handle the
$ORIGIN dynamic string token set in the LD_AUDIT environment variable
securely. A local attacker with write access to a file system containing
setuid or setgid binaries could use this flaw to escalate their privileges.
(CVE-2010-3847)

Red Hat would like to thank Tavis Ormandy for reporting this issue.

All users should upgrade to these updated packages, which contain a
backported patch to correct this issue.