What is CVE-2013-4220?

CVE-2013-4220 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10. CVE-2013-4220 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2013-4220?

CVE-2013-4220 has a CVSS score of 4.9 out of 10, rated Medium severity. The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.

Is there a patch available for CVE-2013-4220?

No patch is currently available for CVE-2013-4220. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2013-4220 actively exploited?

CVE-2013-4220 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2013-4220

Medium

The bad_mode function in arch/arm64/kernel/traps.c in the Linux kernel before 3.9.5 on the ARM64 platform allows local users to cause a denial of service (system crash) via vectors involving an attempted register access that triggers an unexpected value in the Exception Syndrome Register (ESR).

Package Linux Kernel

Published 2013-08-25

Last modified 2026-04-29

CVSS version 2.0

Patch available

Awaiting data

CVSS 2.0 score

4.9

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

User Interaction

Scope

Confidentiality

Low

Integrity

None

Availability

Vector string

AV:L/AC:L/Au:N/C:N/I:N/A:C

References

The following references provide additional information about CVE-2013-4220 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel.org
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.5
Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=996380
Kernel patch commit
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9955ac47f4ba1c95ecb6092aeaefb40a22e99268
Patch
Kernel patch commit
http://www.openwall.com/lists/oss-security/2013/08/08/12
Patch
Kernel patch commit
https://github.com/torvalds/linux/commit/9955ac47f4ba1c95ecb6092aeaefb40a22e99268
Patch

Details

CVE ID CVE-2013-4220

Severity Medium

CVSS score 4.9 / 10

CVSS version 2.0

Published 2013-08-25

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2013-4220?

CVE-2013-4220 is a Medium severity Linux kernel vulnerability with a CVSS score of 4.9 out of 10 . CVE-2013-4220 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2013-4220?

CVE-2013-4220 has a CVSS score of 4.9 out of 10, rated Medium severity (CVSS 2.0). The vector string is AV:L/AC:L/Au:N/C:N/I:N/A:C.
Is there a patch available for CVE-2013-4220?

No patch is currently available for CVE-2013-4220. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2013-4220 actively exploited?

No — CVE-2013-4220 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.