CVE-2013-2596
CVE-2013-2596
In short
A flaw in the Linux kernel's graphics driver allows a local attacker to map and access all of kernel memory by exploiting an integer overflow, potentially gaining full system control.
Technical detail
An integer overflow in the fb_mmap function (drivers/video/fbmem.c) in Linux kernel versions before 3.8.9 permits local attackers to establish read-write mappings of the entire kernel memory space via crafted mmap2 syscalls on /dev/graphics/fb0, enabling privilege escalation when a graphics device is accessible.
Summary generated and translated by AI from the official 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.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/apublic PoCs found — 1
githubgithub.com/hiikezoe/libfb_mem_exploit★ 5⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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http://forum.xda-developers.com/showthread.php?t=2255491http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b4cbb197c7e7a68dbad0d491242e3ca67420c13ehttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc9bbca8f650e5f738af8806317c0a041a48ae4ahttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761http://marc.info/?l=linux-kernel&m=136616837923938&w=2http://rhn.redhat.com/errata/RHSA-2015-0695.htmlhttp://rhn.redhat.com/errata/RHSA-2015-0782.htmlhttp://rhn.redhat.com/errata/RHSA-2015-0803.htmlhttps://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13ehttps://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4ahttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-2596http://www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1-2-other-devices-too/