Resource Exhaustion Affecting xen-libs package, versions <4.10.2_04-3.9.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (23rd percentile)

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  • Snyk IDSNYK-SLES150-XENLIBS-2759494
  • published14 Apr 2022
  • disclosed28 Dec 2018

Introduced: 28 Dec 2018

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

How to fix?

Upgrade SLES:15.0 xen-libs to version 4.10.2_04-3.9.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-libs package and not the xen-libs package as distributed by SLES. See How to fix? for SLES:15.0 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).