Name: CVE-2020-27672: Concurrent Execution using Shared Resource with Improper Synchronization
Creator: Rapid7
Published: 2020-10-22T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2020-27672, CWE-362, CWE-416, CVSS 7, EPSS 0.00039

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.

CVSS Details

CVSS 3.1 Base Score: 7
CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade xen	Mar 26, 2024	Oct 22, 2020
Debian	—	Upgrade xen	Dec 7, 2020	Oct 22, 2020
Gentoo Linux	—	Upgrade app-emulation/xen.Upgrade app-emulation/xen-tools.	Nov 12, 2020	Oct 22, 2020
Suse	—	Upgrade xen-toolsUpgrade xen-develUpgrade xen-libs-32bitUpgrade xen-doc-htmlUpgrade xen-libsUpgrade xen-tools-xendomains-wait-diskUpgrade xen-kmp-defaultUpgrade xenUpgrade xen-tools-domUUpgrade xen-kmp-pae	Dec 11, 2020	Oct 22, 2020
Ubuntu	—	No solution exists	Jun 26, 2025	Oct 22, 2020

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CVSS Details

Covered by Rapid7

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