Resource Exhaustion Affecting xen package, versions <4.11.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (23rd percentile)

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  • Snyk IDSNYK-ALPINE316-XEN-2844856
  • published21 Jul 2020
  • disclosed17 Aug 2018

Introduced: 17 Aug 2018

CVE-2018-15469  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Alpine:3.16 xen to version 4.11.1-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:3.16 relevant fixed versions and status.

An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash).