What is CVE-2013-1943?

CVE-2013-1943 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2013-1943 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2013-1943?

CVE-2013-1943 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2013-1943?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2013-1943 patch availability.

Is CVE-2013-1943 actively exploited?

CVE-2013-1943 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2013-1943

High

The KVM subsystem in the Linux kernel before 3.0 does not check whether kernel addresses are specified during allocation of memory slots for use in a guest's physical address space, which allows local users to gain privileges or obtain sensitive information from kernel memory via a crafted application, related to arch/x86/kvm/paging_tmpl.h and virt/kvm/kvm_main.c.

Package Linux Kernel

Published 2013-07-16

Last modified 2026-04-29

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-20

CVE-2013-1943 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

5 total

Red Hat
https://bugzilla.redhat.com/show_bug.cgi?id=950490

Issue Tracking Patch Third Party Advisory
GitHub
https://github.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e

Patch Third Party Advisory
Kernel Git
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19e
Web
http://web.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0

Broken Link
Ubuntu Security
http://www.ubuntu.com/usn/USN-1939-1

Third Party Advisory

Details

CVE ID CVE-2013-1943

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2013-07-16

Modified 2026-04-29

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2013-1943?

CVE-2013-1943 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2013-1943 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2013-1943?

CVE-2013-1943 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2013-1943?

Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2013-1943 patch availability.
Is CVE-2013-1943 actively exploited?

No. CVE-2013-1943 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.