Vulnerability Description
An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 4.2.0, <= 4.14.0 |
| Opensuse | Leap | 15.1 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 31 |
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/2021/01/19/8Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-346.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-346.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/2021/01/19/8Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-346.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-2020-27671?
CVE-2020-27671 is a vulnerability with a CVSS score of 7.8 (HIGH). An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing ...
How severe is CVE-2020-27671?
CVE-2020-27671 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27671?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Opensuse Leap, Debian Debian Linux, Fedoraproject Fedora.