CVE-2015-3214 Information

Description

The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index.

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee73f656a604d5aa9df86a97102e4e462dd79924 http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.33 http://rhn.redhat.com/errata/RHSA-2015-1507.html http://rhn.redhat.com/errata/RHSA-2015-1508.html http://rhn.redhat.com/errata/RHSA-2015-1512.html http://www.debian.org/security/2015/dsa-3348 http://www.openwall.com/lists/oss-security/2015/06/25/7 http://www.securityfocus.com/bid/75273 http://www.securitytracker.com/id/1032598 https://bugzilla.redhat.com/show_bug.cgi?id=1229640 https://github.com/torvalds/linux/commit/ee73f656a604d5aa9df86a97102e4e462dd79924 https://security.gentoo.org/glsa/201510-02 https://support.lenovo.com/product_security/qemu https://support.lenovo.com/us/en/product_security/qemu https://www.exploit-db.com/exploits/37990/ https://www.mail-archive.com/qemu-devel@nongnu.org/msg304138.html