CVE-2024-45817 Affecting xen package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-DEBIAN11-XEN-8089222
  • published25 Sept 2024
  • disclosed25 Sept 2024

Introduced: 25 Sep 2024

CVE-2024-45817  (opens in a new tab)

How to fix?

There is no fixed version for Debian:11 xen.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

In x86's APIC (Advanced Programmable Interrupt Controller) architecture, error conditions are reported in a status register. Furthermore, the OS can opt to receive an interrupt when a new error occurs.

It is possible to configure the error interrupt with an illegal vector, which generates an error when an error interrupt is raised.

This case causes Xen to recurse through vlapic_error(). The recursion itself is bounded; errors accumulate in the the status register and only generate an interrupt when a new status bit becomes set.

However, the lock protecting this state in Xen will try to be taken recursively, and deadlock.

CVSS Scores

version 3.1