CVE-2013-2596

Advisory lineage Upstream: 0 Downstream: 7
Analyzed
Published: 13 Apr 2013, 01:00
Last modified:22 Oct 2025, 00:05

Vulnerability Summary

Overall Risk (default)
medium
42/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
3.13% LOW
3% probability +1.13%
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
4 found
Dark Web
Not detected

Timeline

13 Apr 2013, 01:00
Published
Vulnerability first disclosed
15 Sept 2022, 00:00
Added to CISA KEV
Linux Kernel Integer Overflow Vulnerability
06 Oct 2022, 00:00
CISA Remediation Due
Apply updates per vendor instructions.
22 Oct 2025, 00:05
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 3.13%• Percentile: 87%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • linux•linux_kernel

    ≥ 2.6.12, < 3.0.75 | ≥ 3.1, < 3.2.45 | ≥ 3.3, < 3.4.42 | ≥ 3.5, < 3.8.9

  • motorola•android

    4.1.2

References (17)