Please see bug 555714 for reference. The version 2.8.3 is a bugfix release and would be great to have it in final RHEL6.
Mar 14, 2010: libarchive 2.8.3 released
Mar 14, 2010: Symlink dereference fix for Linux broke the build there; corrected.
Mar 14, 2010: libarchive 2.8.2 released
Mar 12, 2010: Fix NULL deference for short self-extracting zip archives.
Mar 12, 2010: Don't dereference symlinks on Linux when reading ACLs.
Mar 07, 2010: Better detection of SHA2 support for old OpenSSL versions.
Mar 07, 2010: Fix parsing of input files for bsdtar -T.
Mar 07, 2010: Do not leak setup_xattr into the global namespace.
Mar 06, 2010: libarchive 2.8.1 released
Mar 06, 2010: Fix build when an older libarchive is already installed
Mar 03, 2010: Use O_BINARY opening files in bsdtar
Mar 02, 2010: Include missing archive_crc32.h
Mar 01, 2010: Correctly include iconv.h required by libxml2.
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release. Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release. This request is not yet committed for
Red Hat Enterprise Linux Beta 2 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.