CVE-2014-1642: Use After Free
The IRQ setup in Xen 4.2.x and 4.3.x, when using device passthrough and configured to support a large number of CPUs, frees certain memory that may still be intended for use, which allows local guest administrators to cause a denial of service (memory corruption and hypervisor crash) and possibly execute arbitrary code via vectors related to an out-of-memory error that triggers a (1) use-after-free or (2) double free.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2014-1642?
CVE-2014-1642 is classified as a high severity vulnerability due to its potential to cause denial of service through memory corruption and hypervisor crashes.
How do I fix CVE-2014-1642?
To fix CVE-2014-1642, users should upgrade to a patched version of Xen, specifically versions 4.2.4 or later, and 4.3.2 or later.
What versions of Xen are affected by CVE-2014-1642?
CVE-2014-1642 affects Xen versions 4.2.0 through 4.2.3 and 4.3.0 through 4.3.1.
Who can exploit CVE-2014-1642?
Local guest administrators can exploit CVE-2014-1642 to cause a denial of service on the hypervisor.
What is the impact of CVE-2014-1642?
The impact of CVE-2014-1642 includes memory corruption and possible crashes of the hypervisor, leading to service interruptions.