Memory Leak Affecting xen package, versions <4.14.0+88-g1d1d1f5391-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-DEBIAN11-XEN-1051753
  • published16 Dec 2020
  • disclosed15 Dec 2020

Introduced: 15 Dec 2020

CVE-2020-29485  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

Upgrade Debian:11 xen to version 4.14.0+88-g1d1d1f5391-1 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 Debian. See How to fix? for Debian:11 relevant fixed versions and status.

An issue was discovered in Xen 4.6 through 4.14.x. When acting upon a guest XS_RESET_WATCHES request, not all tracking information is freed. A guest can cause unbounded memory usage in oxenstored. This can lead to a system-wide DoS. Only systems using the Ocaml Xenstored implementation are vulnerable. Systems using the C Xenstored implementation are not vulnerable.

CVSS Scores

version 3.1