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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…

High Known exploited
Severity
7.8 / 10
High · CVSS 3.1
Exploit chance (EPSS)
3.21%
Chance of exploitation in the next 30 days. Higher than 88.18% of scored vulnerabilities.
Known exploited
Yes
In CISA's catalog since Sep 15, 2022
Weakness
—
Not classified
Fix
None yet
No fixed version published
Exploited in the wild. Linux Kernel Integer Overflow Vulnerability (Linux Kernel). Required action: Apply updates per vendor instructions. Due for U.S. federal agencies by Oct 6, 2022.

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.

How to fix

No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.

Severity breakdown

CVSS 3.1 7.8

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

References

Advisories

Fixes and patches

Exploits and evidence

Other links

Timeline

  1. Published
  2. Added to CISA's Known Exploited Vulnerabilities catalog
  3. Remediation due for U.S. federal agencies
  4. Last updated by the source
  5. Latest EPSS score
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