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Status published
High
CVE-2020-27672
An issue was discovered in Xen through 4.14.x allowing x86...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://xenbits.xen.org/xsa/advisory-345.html
- https://xenbits.xen.org/xsa/advisory-345.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
- https://security.gentoo.org/glsa/202011-06
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
- https://www.debian.org/security/2020/dsa-4804
- http://www.openwall.com/lists/oss-security/2021/01/19/7
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Affected Vendor
Affected Software
xen, fedora, leap, debian linux
Vulnerable Versions:
3.2.0, 31, 15.1, 15.2, 10.0
Timeline
Official Publish:
October 22nd, 2020
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.