CVE-2013-2596

CVE-2013-2596 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-09-15). The underlying weakness is classified as CWE-190.

Key facts

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.

Frequently asked questions

What is CVE-2013-2596?
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.
How severe is CVE-2013-2596?
CVE-2013-2596 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2013-2596 being actively exploited?
Yes. CVE-2013-2596 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-15, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2013-2596?
CVE-2013-2596 primarily affects Linux Linux Kernel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-2596?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2013-2596 have an EU (EUVD) identifier?
Yes. CVE-2013-2596 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2013-2538. It is also flagged as exploited in the EUVD (since 2022-09-15).
When was CVE-2013-2596 published?
CVE-2013-2596 was published on 2013-04-13 and last updated on 2026-06-16.

References

Affected products (2)

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