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Vulnerabilities

Vulnerability · CVE-2013-2596

Linux Kernel Integer Overflow Vulnerability

Published Apr 12, 2013 · catalog updated Jun 16, 2026 · Linux Kernel

Patch now

CVE-2013-2596 is in the CISA known-exploited catalog, due Oct 6, 2022. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
3.21%
Remediation
Remediation guidance
Affected products
cpe linux/linux kernel · cpe motorola/android · vendor Linux Kernel · vendor n/a n/a

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe linux/linux kernelversion unspecified
  • cpe motorola/android4.1.2
  • vendor Linux Kernelversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2013-2596

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2013-2596 is in the CISA known-exploited catalog, due Oct 6, 2022. Confirm Linux Kernel against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 4.1.2. Apply updates per vendor instructions.

What should an analyst verify?

CWE-189; CWE-190: Integer Overflow. EPSS 3.21%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 12, 2013 · Catalog

    Detected

    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.

  2. Sep 15, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Oct 6, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2013-2596

    Linux kernel fb_mmap function in drivers/video/fbmem.c contains an integer overflow vulnerability that allows for privilege escalation.

    cisa.gov
  • CVE.orgVulnerability recordCVE-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 consequentl

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2013-2596

    30-day exploitation probability 3.2%

    first.org
  • NIST NVDVulnerability recordCVE-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 consequentl

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2013-2596

    Linux kernel fb_mmap function in drivers/video/fbmem.c contains an integer overflow vulnerability that allows for privilege escalation.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.