Home/CVE/Linux Kernel Integer Overflow Vulnerability
CVE

CVE-2013-2596

Linux Kernel Integer Overflow Vulnerability

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.

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.03131
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0

Required Remediation

Apply updates per vendor instructions.

Weakness Classification

Affected Products & Versions

5
linux kernel>= 2.6.12 and < 3.0.75
linux kernel>= 3.1 and < 3.2.45
linux kernel>= 3.3 and < 3.4.42
linux kernel>= 3.5 and < 3.8.9
motorola androidall versions

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Apr 2013 · 02:59 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

6
rhsaRHSA-2015:0695Important
rhsaRHSA-2015:0782Important
rhsaRHSA-2015:0803Important
rhsaRHSA-2016:0450Important
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