# CVE-2013-2596: Linux Kernel Integer Overflow Vulnerability

> CVE-2013-2596: Linux Kernel Integer Overflow Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2013-2596
Last updated: 2025-10-22T00:05:43Z

- Published: 2013-04-13 01:00 UTC · Updated: 2025-10-22 00:05 UTC · Assigner: mitre
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS: 3.2%, 88th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-09-15, federal due date 2022-10-06, ransomware use: Unknown

## 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Linux: Kernel

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2013-2596)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2013-2596)
- [http://forum.xda-developers.com/showthread.php?t=2255491](http://forum.xda-developers.com/showthread.php?t=2255491)
- [http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b4cbb197c7e7a68dbad0d491242e3ca67420c13e](http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%253Ba=commit%253Bh=b4cbb197c7e7a68dbad0d491242e3ca67420c13e)
- [http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc9bbca8f650e5f738af8806317c0a041a48ae4a](http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%253Ba=commit%253Bh=fc9bbca8f650e5f738af8806317c0a041a48ae4a)
- [http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761](http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761)
- [http://marc.info/?l=linux-kernel&m=136616837923938&w=2](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-2015-0695.html)
- [http://rhn.redhat.com/errata/RHSA-2015-0782.html](http://rhn.redhat.com/errata/RHSA-2015-0782.html)
- [http://rhn.redhat.com/errata/RHSA-2015-0803.html](http://rhn.redhat.com/errata/RHSA-2015-0803.html)
- [https://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e](https://github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e)
- [https://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a](https://github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a)
- [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.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.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.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9)
- [http://www.mandriva.com/security/advisories?name=MDVSA-2013:176](http://www.mandriva.com/security/advisories?name=MDVSA-2013:176)
- [http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html](http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html)
- [http://www.securityfocus.com/bid/59264](http://www.securityfocus.com/bid/59264)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2013-2596 · Markdown: https://rewindex.com/cve/CVE-2013-2596.md · JSON: https://rewindex.com/api/v1/cves/CVE-2013-2596 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:46:24.006Z