CVE-2007-4573 Information

Description

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.

Reference

http://fedoranews.org/updates/FEDORA-2007-229.shtml http://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35.3 http://lists.opensuse.org/opensuse-security-announce/2007-12/msg00001.html http://lkml.org/lkml/2007/9/21/512 http://lkml.org/lkml/2007/9/21/513 http://marc.info/?l=full-disclosure&m=119062587407908&w=2 http://secunia.com/advisories/26917 http://secunia.com/advisories/26919 http://secunia.com/advisories/26934 http://secunia.com/advisories/26953 http://secunia.com/advisories/26955 http://secunia.com/advisories/26978 http://secunia.com/advisories/26994 http://secunia.com/advisories/26995 http://secunia.com/advisories/27212 http://secunia.com/advisories/27227 http://secunia.com/advisories/27912 http://secunia.com/advisories/29058 http://securitytracker.com/id?1018748 http://www.debian.org/security/2007/dsa-1378 http://www.debian.org/security/2007/dsa-1381 http://www.debian.org/security/2008/dsa-1504 http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.22.7 http://www.mandriva.com/security/advisories?name=MDKSA-2007:195 http://www.mandriva.com/security/advisories?name=MDKSA-2007:196 http://www.mandriva.com/security/advisories?name=MDVSA-2008:008 http://www.mandriva.com/security/advisories?name=MDVSA-2008:105 http://www.novell.com/linux/security/advisories/2007_53_kernel.html http://www.redhat.com/support/errata/RHSA-2007-0936.html http://www.redhat.com/support/errata/RHSA-2007-0937.html http://www.redhat.com/support/errata/RHSA-2007-0938.html http://www.securityfocus.com/archive/1/480451/100/0/threaded http://www.securityfocus.com/archive/1/480705/100/0/threaded http://www.securityfocus.com/bid/25774 http://www.ubuntu.com/usn/usn-518-1 http://www.vupen.com/english/advisories/2007/3246 https://issues.rpath.com/browse/RPL-1754 https://oval.cisecurity.org/repository/search/definition/oval3Aorg.mitre.oval3Adef3A9735 https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00355.html