Race Condition Affecting xen package, versions <4.14.0-r2
Threat Intelligence
EPSS
0.05% (16th
percentile)
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Test your applications- Snyk ID SNYK-ALPINE320-XEN-7012504
- published 23 May 2024
- disclosed 22 Oct 2020
Introduced: 22 Oct 2020
CVE-2020-27672 Open this link in a new tabHow to fix?
Upgrade Alpine:3.20 xen to version 4.14.0-r2 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:3.20 relevant fixed versions and status.
An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.
References
- http://xenbits.xen.org/xsa/advisory-345.html
- https://www.debian.org/security/2020/dsa-4804
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
- https://security.gentoo.org/glsa/202011-06
- https://xenbits.xen.org/xsa/advisory-345.html
- http://www.openwall.com/lists/oss-security/2021/01/19/7
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
CVSS Scores
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