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CVE-2013-1943

7.8 · 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 lo…

Published Jul 16, 2013linuxCWE-20EPSS 0.45%

Overview

CVE-2013-1943 is a high-severity vulnerability affecting linux linux_kernel. It was published on July 16, 2013 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel>= 0, < 3.0Affected

References

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19eRefweb.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0Refwww.ubuntu.com/usn/USN-1939-1Refbugzilla.redhat.com/show_bug.cgi?id=950490GitHubgithub.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19eRefgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fa3d315a4ce2c0891cdde262562e710d95fba19eRefweb.archive.org/web/20130329070349/http://ftp.osuosl.org/pub/linux/kernel/v3.0/ChangeLog-3.0Refwww.ubuntu.com/usn/USN-1939-1Refbugzilla.redhat.com/show_bug.cgi?id=950490GitHubgithub.com/torvalds/linux/commit/fa3d315a4ce2c0891cdde262562e710d95fba19e

How CyberStrike helps

Frequently asked questions

What is CVE-2013-1943?

CVE-2013-1943 is a high-severity vulnerability affecting linux linux_kernel. It was published on July 16, 2013 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2013-1943?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-1943?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2013-1943?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-1943 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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