Race Condition Affecting xen package, versions <4.9.0-r4


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-ALPINE316-XEN-2845137
  • published21 Jul 2020
  • disclosed12 Sept 2017

Introduced: 12 Sep 2017

CVE-2017-14317  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 xen to version 4.9.0-r4 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:3.16 relevant fixed versions and status.

A domain cleanup issue was discovered in the C xenstore daemon (aka cxenstored) in Xen through 4.9.x. When shutting down a VM with a stubdomain, a race in cxenstored may cause a double-free. The xenstored daemon may crash, resulting in a DoS of any parts of the system relying on it (including domain creation / destruction, ballooning, device changes, etc.).