Resource management errors in Linux kernel - CVE-2012-1601

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Main Vulnerability Database Vulnerabilities #VU92813

Resource management errors in Linux kernel - CVE-2012-1601

Published: May 17, 2012 / Updated: January 5, 2018


Vulnerability identifier: #VU92813
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2012-1601
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The KVM implementation in the Linux kernel before 3.3.6 allows host OS users to cause a denial of service (NULL pointer dereference and host OS crash) by making a KVM_CREATE_IRQCHIP ioctl call after a virtual CPU already exists.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-345-ec2 (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)

How to mitigate CVE-2012-1601

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 2.6.24-32.104, 2.6.32-41.89, 2.6.38-15.60, 3.0.0-20.34, 3.2.0-24.38
linux-image-2.6.32-345-ec2 (Ubuntu package) - update to 2.6.32-345.48
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-15.60~lucid1
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-20.34~lucid1

External References

Related Security Bulletins