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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.

• http://rhn.redhat.com/errata/RHSA-2015-0695.html vendor-advisoryx_refsource_REDHAT
• http://www.securityfocus.com/bid/59264 vdb-entryx_refsource_BID
• http://www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1-2-other-devices-too/ x_refsource_MISC
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:176 vendor-advisoryx_refsource_MANDRIVA
• http://marc.info/?l=linux-kernel&m=136616837923938&w=2 mailing-listx_refsource_MLIST
• https://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e x_refsource_CONFIRM
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html x_refsource_CONFIRM
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b4cbb197c7e7a68dbad0d491242e3ca67420c13e x_refsource_CONFIRM
• http://rhn.redhat.com/errata/RHSA-2015-0803.html vendor-advisoryx_refsource_REDHAT
• http://forum.xda-developers.com/showthread.php?t=2255491 x_refsource_MISC
• http://www.droidrzr.com/index.php/topic/15208-root-motochopper-yet-another-android-root-exploit/ x_refsource_MISC
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9 x_refsource_CONFIRM
• http://rhn.redhat.com/errata/RHSA-2015-0782.html vendor-advisoryx_refsource_REDHAT
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 x_refsource_CONFIRM
• https://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a x_refsource_CONFIRM
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc9bbca8f650e5f738af8806317c0a041a48ae4a x_refsource_CONFIRM
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-2596 government-resource