Off-by-one Error Affecting xen package, versions <4.14.0+88-g1d1d1f5391-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-DEBIAN11-XEN-1045171
  • published25 Nov 2020
  • disclosed24 Nov 2020

Introduced: 24 Nov 2020

CVE-2020-29040  (opens in a new tab)
CWE-193  (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 through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

CVSS Scores

version 3.1