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CVE-2013-2596

Linux Kernel Integer Overflow

7.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 3.21%
  1. Published13 Apr 2013
  2. Added to CISA KEV15 Sept 2022
  3. Remediation due6 Oct 2022
Actively exploited (CISA KEV)

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

Added to KEV: 15 Sept 2022Federal remediation due: 6 Oct 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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux Kernel≥ 2.6.12 < 3.0.75 · ≥ 3.1 < 3.2.45 · ≥ 3.3 < 3.4.42 · ≥ 3.5 < 3.8.9
Motorola Android4.1.2

Remediation

Fixed in
Linux Kernel≥ 3.0.75

References

and 7 more references

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Frequently asked

Is CVE-2013-2596 being actively exploited?

Yes. CVE-2013-2596 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Sept 2022.

How severe is CVE-2013-2596?

CVE-2013-2596 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 3.21% probability of exploitation.

Which products are affected by CVE-2013-2596?

Affected products include Linux Kernel, Motorola Android.

How do I fix CVE-2013-2596?

Upgrade affected software to a fixed version, for example Linux Kernel 3.0.75 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2013-2596 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.