Improper input validation in Linux kernel - CVE-2013-0190

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Main Vulnerability Database Vulnerabilities #VU95723

Improper input validation in Linux kernel - CVE-2013-0190

Published: February 13, 2013 / Updated: March 8, 2013


Vulnerability identifier: #VU95723
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-2013-0190
CWE-ID: CWE-20
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 xen_failsafe_callback function in Xen for the Linux kernel 2.6.23 and other versions, when running a 32-bit PVOPS guest, allows local users to cause a denial of service (guest crash) by triggering an iret fault, leading to use of an incorrect stack pointer and stack corruption.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-350-ec2 (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
linux-lts-quantal (Ubuntu package)

How to mitigate CVE-2013-0190

Install update from vendor's repository.

linux (Ubuntu package) - addressed in versions 2.6.32-45.103, 3.0.0-31.48, 3.2.0-39.62, 3.5.0-26.42
linux-image-2.6.32-350-ec2 (Ubuntu package) - update to 2.6.32-350.60
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-31.48~lucid1
linux-lts-quantal (Ubuntu package) - update to 3.5.0-26.42~precise1

External References

Related Security Bulletins