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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 3.2.0, <= 4.14.0 |
| Fedoraproject | Fedora | 31 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/7Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-345.htmlPatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202011-06Third Party Advisory
- https://www.debian.org/security/2020/dsa-4804Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-345.htmlPatchVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.htmlMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/7Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-345.htmlPatchVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202011-06Third Party Advisory
- https://www.debian.org/security/2020/dsa-4804Third Party Advisory
FAQ
What is CVE-2020-27672?
CVE-2020-27672 is a vulnerability with a CVSS score of 7.0 (HIGH). 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...
How severe is CVE-2020-27672?
CVE-2020-27672 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27672?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Fedoraproject Fedora, Opensuse Leap, Debian Debian Linux.