CVE-2013-2596 Information

Description

Integer overflow in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel before 3.8.9 as used in a certain Motorola build of Android 4.1.2 and other products allows local users to create a read-write memory mapping for the entirety of kernel memory and consequently gain privileges via crafted /dev/graphics/fb0 mmap2 system calls as demonstrated by the Motochopper pwn program.

Reference

http://forum.xda-developers.com/showthread.php?t=2255491 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b4cbb197c7e7a68dbad0d491242e3ca67420c13e http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc9bbca8f650e5f738af8806317c0a041a48ae4a http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 http://marc.info/?l=linux-kernel&m=136616837923938&w=2 http://rhn.redhat.com/errata/RHSA-2015-0695.html http://rhn.redhat.com/errata/RHSA-2015-0782.html http://rhn.redhat.com/errata/RHSA-2015-0803.html http://www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1-2-other-devices-too/ http://www.droidrzr.com/index.php/topic/15208-root-motochopper-yet-another-android-root-exploit/ http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9 http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html http://www.securityfocus.com/bid/59264 https://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e https://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a