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.

References

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/[email protected]/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/

https://www.debian.org/security/2020/dsa-4804

http://www.openwall.com/lists/oss-security/2021/01/19/7

http://xenbits.xen.org/xsa/advisory-345.html

Details

Risk Information

CVSS v2

CVSS v3