CVEvulnerability
CVE-2020-27672
7.0 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-10-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.0 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.9 MEDIUM — AV:L/AC:M/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-362, CWE-416
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.
Affected configurations
• xen xen (>= 3.2.0 <= 4.14.0)
• fedoraproject fedora 31
• opensuse leap 15.1
• opensuse leap 15.2
• debian debian linux 10.0
Related
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/7 Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-345.html Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202011-06 Third Party Advisory
- https://www.debian.org/security/2020/dsa-4804 Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-345.html Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/7 Mailing List, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-345.html Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202011-06 Third Party Advisory
- https://www.debian.org/security/2020/dsa-4804 Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-345.html Patch, Vendor Advisory