NULL Pointer Dereference Affecting xen package, versions <4.9.0-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE323-XEN-14181706
- published4 Dec 2025
- disclosed5 Jul 2017
Introduced: 5 Jul 2017
CVE-2017-10917 (opens in a new tab)How to fix?
Upgrade Alpine:3.23 xen to version 4.9.0-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Alpine.
See How to fix? for Alpine:3.23 relevant fixed versions and status.
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.