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

Source: https://junglewise.ai/threats/cve-2013-2596-linux-kernel-integer-overflow-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-09-15. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2013-2596 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-09-15

An integer overflow vulnerability in the fb_mmap function in drivers/video/fbmem.c in the Linux kernel allows local users to create read-write memory mappings for the entirety of kernel memory. This flaw can be exploited via crafted /dev/graphics/fb0 mmap2 system calls to gain elevated privileges.

Technologies: [Linux Kernel](https://junglewise.ai/threats/technologies/kernel). Vendors: [Linux](https://junglewise.ai/threats/vendors/linux).

## Quick answers

**Is CVE-2013-2596 exploited in the wild?** Yes. CVE-2013-2596 is known to be exploited in the wild, first recorded on 15 September 2022. Treat it as urgent.

**How severe is CVE-2013-2596?** Critical severity, with a CVSS score of 7.8, published 15 September 2022.

**Which products and versions are affected?** Linux Linux Kernel before 3.8.9; Motorola Android 4.1.2.

**Is there a fix for CVE-2013-2596?** A patch was published on 2013-05-04: Linux kernel 3.8.9 released with fix. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2013-2596 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2013-2596?** Check whether you run Linux Kernel. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Linux Linux Kernel before 3.8.9
- Motorola Android 4.1.2

## Timeline

- 2013-04-16: disclosed: Mailing list disclosure of the vulnerability.
- 2013-05-04: patched: Linux kernel 3.8.9 released with fix.
- 2022-09-15: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
- 2022-09-15: advisory: NVD publication date.

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