CVE-2023-34324

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The closing of an event channel in the Linux kernel can result in a deadlock. This happens when the close is being performed in parallel to an unrelated Xen console action and the handling of a Xen console interrupt in an unprivileged guest. The closing of an event channel is triggered by removal of a paravirtual device on the other side, which can cause console messages to be issued on the other side quite often, making the chance of triggering the deadlock not neglectable. Note that 32-bit Arm-guests are not affected, as the 32-bit Linux kernel on Arm doesn't use queued-RW-locks, which are required to trigger the issue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.