CISA KEV High Memory corruption exploit reference

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.

Published Apr 12, 2013 · Updated Oct 13, 2026 · Sources: CISA Known Exploited Vulnerabilities, NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: mitre

High

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

CISA KEV · Sep 15, 2022

How the score was calculated

Confirmed exploitation (CISA KEV)+35
EPSS 3.2% (30-day exploitation probability)+13
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Confirmed

CISA KEV, listed Sep 15, 2022

EPSS FIRST

3.21%

ahead of 88% of scored CVEs · Oct 14, 2026

Affects

Linux

Linux Kernel and 1 more

CVSS base

7.8

High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Active

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

Documented patch — marc.info (NIST National Vulnerability Database)
Documented patch — www.oracle.com (NIST National Vulnerability Database)
Documented patch — github.com (NIST National Vulnerability Database)
Documented patch — github.com (NIST National Vulnerability Database)

CISA required action CISA

Apply updates per vendor instructions.

US federal deadline: Oct 6, 2022 — passed 1470 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Linux Linux Kernel, Motorola Android).
Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
Apply the fixed version or the patch documented under Remediation.
Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Linux	Linux Kernel	≥ 2.6.12 and < 3.0.75≥ 3.1 and < 3.2.45≥ 3.3 and < 3.4.42≥ 3.5 and < 3.8.9	Vulnerable	NIST National Vulnerability Database
Motorola	Android	version 4.1.2	Vulnerable	NIST National Vulnerability Database

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Local

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
7.8	CVSS 3.1	High	1.8	5.9	nvd@nist.gov via NIST National Vulnerability Database
7.8	CVSS 3.1	High	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0 via NIST National Vulnerability Database
7.8	CVSS 3.1	High	—	—	GitHub, Inc. via GitHub Security Advisories
7.8	CVSS 3.1	High	—	—	CISA-ADP via CVE Program (cve.org) e CISA ADP
6.9	CVSS 2.0	Medium	3.4	10.0	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-190 · Integer Overflow or Wraparound

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

Listed

Sep 15, 2022

Federal deadline

Oct 6, 2022

passed 1470 day(s) ago

Ransomware use

Unknown

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

EPSS over time FIRST

Oct 12, 2026 → Oct 14, 2026 · 3 reading(s) · max 3.21%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Local/physical vector: focus on endpoint telemetry (EDR) from affected hosts.
Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
Hunt retroactively in logs from before Sep 15, 2022 (KEV listing): exploitation may have started earlier.

endpoint telemetry (EDR)crash dumps

Timeline

What happened to this CVE, newest first.

2026
SSVC assessment updated
Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 13, 2026
Fix documented
Oct 13, 2026 · NIST National Vulnerability Database
Affected products added · linux/linux kernel, motorola/android
Oct 13, 2026 · NIST National Vulnerability Database
CVSS changed · 7.8
Oct 13, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 13, 2026 · NIST National Vulnerability Database
Added to CISA KEV (detected)
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
Record created in this database
Oct 13, 2026 · CISA Known Exploited Vulnerabilities
2022
Added to CISA KEV catalog
Sep 14, 2022 · CISA
2013
CVE published
Apr 12, 2013 · mitre

Source activity

Repeated readings are counted rather than listed.

2× References added · Oct 13, 2026 – Oct 13, 2026
1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

23 on the record

marc.info/
Mailing List, Patch, Third Party Advisory, mailing-list, x_refsource_MLIST, NIST National Vulnerability Database
github.com/torvalds/linux/commit/b4cbb197c7e7a68dbad0d491242e3ca67420c13e
Patch, x_refsource_CONFIRM, NIST National Vulnerability Database
github.com/torvalds/linux/commit/fc9bbca8f650e5f738af8806317c0a041a48ae4a
Exploit, Patch, x_refsource_CONFIRM, NIST National Vulnerability Database
www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
Patch, Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
www.cisa.gov/known-exploited-vulnerabilities-catalog
US Government Resource, NIST National Vulnerability Database
www.droidrzr.com/index.php/topic/15208-root-motochopper-yet-another-android-root-explo
Exploit, Issue Tracking, x_refsource_MISC, NIST National Vulnerability Database
www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1
Exploit, Issue Tracking, Third Party Advisory, x_refsource_MISC, NIST National Vulnerability Database
www.droidrzr.com/index.php/topic/15208-root-motochopper-yet-another-android-root-explo
GitHub Security Advisories
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9
Mailing List, Release Notes, x_refsource_CONFIRM, NIST National Vulnerability Database
git.kernel.org/
Broken Link, x_refsource_CONFIRM, NIST National Vulnerability Database
git.kernel.org/
Broken Link, x_refsource_CONFIRM, NIST National Vulnerability Database
www.securityfocus.com/bid/59264
Broken Link, Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID, NIST National Vulnerability Database
nvd.nist.gov/vuln/detail/CVE-2013-2596
GitHub Security Advisories
forum.xda-developers.com/showthread.php
Exploit, x_refsource_MISC, NIST National Vulnerability Database
github.com/advisories/GHSA-xg37-4cgv-wc3c
GitHub Security Advisories
www.mandriva.com/security/advisories
Broken Link, vendor-advisory, x_refsource_MANDRIVA, NIST National Vulnerability Database
git.kernel.org/
GitHub Security Advisories
kb.juniper.net/InfoCenter/index
Third Party Advisory, x_refsource_CONFIRM, NIST National Vulnerability Database
rhn.redhat.com/errata/RHSA-2015-0695.html
Third Party Advisory, vendor-advisory, x_refsource_REDHAT, NIST National Vulnerability Database
git.kernel.org/
GitHub Security Advisories
rhn.redhat.com/errata/RHSA-2015-0782.html
Third Party Advisory, vendor-advisory, x_refsource_REDHAT, NIST National Vulnerability Database
www.droid-life.com/2013/04/09/root-method-released-for-droid-razr-hd-running-android-4-1
GitHub Security Advisories
rhn.redhat.com/errata/RHSA-2015-0803.html
Third Party Advisory, vendor-advisory, x_refsource_REDHAT, NIST National Vulnerability Database

Elsewhere on this site

Linux
every CVE for this vendor

2022-09
what else CISA listed that month

Memory corruption
same class

CWE-190
other pages naming this weakness

Related CVEs (same products)

Medium CVE-2026-98164 KVM: x86/mmu: Check write tracking in all address spaces 16d
High CVE-2026-98163 cgroup: Avoid iteration of dying tasks with zero refcount 19d
Medium CVE-2026-98162 smb/server: fix tree connection leak in smb2_tree_connect() 20d
High CVE-2026-98156 drm/virtio: use the DMA API for resource backing on Xen 20d
Medium CVE-2026-98159 wifi: mt76: mt7921: validate CLC firmware records 20d
Medium CVE-2026-98137 ntfs: treat any nonzero dio zero-range return as an error 20d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2013-2596 is "Linux Kernel Integer Overflow Vulnerability", rated High. It affects Linux Kernel (Linux); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 7.8 describes technical severity. EPSS 3.21% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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