The IA32 system call emulation functionality in Linux kernel 2.4.x and 2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not zero extend the eax register after the 32bit entry path to ptrace is used, which might allow local users to gain privileges by triggering an out-of-bounds access to the system call table using the %RAX register.
fedoranews.org/updates/FEDORA-2007-229.shtml
kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35.3
lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html
lkml.org/lkml/2007/9/21/512
lkml.org/lkml/2007/9/21/513
marc.info/?l=full-disclosure&m=119062587407908&w=2
secunia.com/advisories/26917
secunia.com/advisories/26919
secunia.com/advisories/26934
secunia.com/advisories/26953
secunia.com/advisories/26955
secunia.com/advisories/26978
secunia.com/advisories/26994
secunia.com/advisories/26995
secunia.com/advisories/27212
secunia.com/advisories/27227
secunia.com/advisories/27912
secunia.com/advisories/29058
securitytracker.com/id?1018748
www.debian.org/security/2007/dsa-1378
www.debian.org/security/2007/dsa-1381
www.debian.org/security/2008/dsa-1504
www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.7
www.mandriva.com/security/advisories?name=MDKSA-2007:195
www.mandriva.com/security/advisories?name=MDKSA-2007:196
www.mandriva.com/security/advisories?name=MDVSA-2008:008
www.mandriva.com/security/advisories?name=MDVSA-2008:105
www.novell.com/linux/security/advisories/2007_53_kernel.html
www.redhat.com/support/errata/RHSA-2007-0936.html
www.redhat.com/support/errata/RHSA-2007-0937.html
www.redhat.com/support/errata/RHSA-2007-0938.html
www.securityfocus.com/archive/1/480451/100/0/threaded
www.securityfocus.com/archive/1/480705/100/0/threaded
www.securityfocus.com/bid/25774
www.ubuntu.com/usn/usn-518-1
www.vupen.com/english/advisories/2007/3246
issues.rpath.com/browse/RPL-1754
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9735
www.redhat.com/archives/fedora-package-announce/2007-September/msg00355.html