CVE-2013-0228 Information

Description

The xen_iret function in arch/x86/xen/xen-asm_32.S in the Linux kernel before 3.7.9 on 32-bit Xen paravirt_ops platforms does not properly handle an invalid value in the DS segment register which allows guest OS users to gain guest OS privileges via a crafted application.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=13d2b4d11d69a92574a55bfd985cfb0ca77aebdc http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.9 http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 http://www.openwall.com/lists/oss-security/2013/02/13/10 http://www.ubuntu.com/usn/USN-1795-1 http://www.ubuntu.com/usn/USN-1796-1 http://www.ubuntu.com/usn/USN-1797-1 http://www.ubuntu.com/usn/USN-1805-1 http://www.ubuntu.com/usn/USN-1808-1 https://bugzilla.redhat.com/show_bug.cgi?id=906309 https://github.com/torvalds/linux/commit/13d2b4d11d69a92574a55bfd985cfb0ca77aebdc