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Vulnerabilities / CVE-2017-10917

critical

CVE-2017-10917

xen: NULL pointer deref in event channel poll (XSA-221)

Published Modified CWE 476
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Red Hat8.5CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), Ubuntu (medium).

Description

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.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.10xen4.9.0-r0
alpine 3.11xen4.9.0-r0
alpine 3.12xen4.9.0-r0
alpine 3.13xen4.9.0-r0
alpine 3.14xen4.9.0-r0
alpine 3.15xen4.9.0-r0
alpine 3.16xen4.9.0-r0
alpine 3.17xen4.9.0-r0
alpine 3.18xen4.9.0-r0
alpine 3.19xen4.9.0-r0
alpine 3.20xen4.9.0-r0
alpine 3.21xen4.9.0-r0
Show all 35 entries from 35 sources
SourcePackageFixed in
alpine 3.10xen4.9.0-r0
alpine 3.11xen4.9.0-r0
alpine 3.12xen4.9.0-r0
alpine 3.13xen4.9.0-r0
alpine 3.14xen4.9.0-r0
alpine 3.15xen4.9.0-r0
alpine 3.16xen4.9.0-r0
alpine 3.17xen4.9.0-r0
alpine 3.18xen4.9.0-r0
alpine 3.19xen4.9.0-r0
alpine 3.20xen4.9.0-r0
alpine 3.21xen4.9.0-r0
alpine 3.22xen4.9.0-r0
alpine 3.23xen4.9.0-r0
alpine 3.24xen4.9.0-r0
alpine 3.3xen4.6.6-r0
alpine 3.4xen4.6.6-r0
alpine 3.5xen4.7.3-r0
alpine 3.6xen4.8.2-r0
alpine 3.7xen4.9.0-r0
alpine 3.8xen4.9.0-r0
alpine 3.9xen4.9.0-r0
alpine edgexen4.9.0-r0
debian 11xen4.8.1-1+deb9u3
debian 12xen4.8.1-1+deb9u3
debian 13xen4.8.1-1+deb9u3
debian 14xen4.8.1-1+deb9u3
debian 8xen4.4.1-9+deb8u10
debian 9xen4.8.1-1+deb9u3
echoxen4.8.1-1+deb9u3
ubuntu 14.04xen4.4.2-0ubuntu0.14.04.12
ubuntu 16.04xen4.6.5-0ubuntu1.2
ubuntu 16.04-ESMxen4.6.5-0ubuntu1.2
ubuntu 16.10xen4.7.2-0ubuntu1.3
ubuntu 17.04xen4.8.0-1ubuntu2.2

References

All 9 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.