Vulnerability Description
An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.12, < 4.4.244 |
| Debian | Debian Linux | 9.0 |
| Opensuse | Leap | 15.1 |
| Xen | Xen | <= 4.14.0 |
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/2021/01/19/6Mailing ListThird Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9950PatchVendor Advisory
- https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd307PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202011-06Third Party Advisory
- https://xenbits.xen.org/xsa/advisory-332.htmlPatchThird Party 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/2021/01/19/6Mailing ListThird Party Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e9950PatchVendor Advisory
- https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd307PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2020-27673?
CVE-2020-27673 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e9950...
How severe is CVE-2020-27673?
CVE-2020-27673 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-27673?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Opensuse Leap, Xen Xen.