xattr.c in the ext2 and ext3 file system code for Linux kernel 2.6 does not properly compare the name_index fields when sharing xattr blocks, which could prevent default ACLs from being applied.
acl.bestbits.at/pipermail/acl-devel/2005-February/001848.html
lists.debian.org/debian-kernel/2005/08/msg00238.html
secunia.com/advisories/17073
secunia.com/advisories/17826
secunia.com/advisories/18056
secunia.com/advisories/18059
secunia.com/advisories/19252
www.debian.org/security/2005/dsa-921
www.debian.org/security/2005/dsa-922
www.mandriva.com/security/advisories?name=MDKSA-2005:219
www.novell.com/linux/security/advisories/2005_18_kernel.html
www.redhat.com/support/errata/RHSA-2005-514.html
www.redhat.com/support/errata/RHSA-2006-0144.html
www.securityfocus.com/archive/1/427980/100/0/threaded
www.securityfocus.com/bid/14793
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10495