CVE-2020-27673

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.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.05%

Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://xenbits.xen.org/xsa/advisory-332.html	third party advisory patch
https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070	third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070	patch vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html	mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html	mailing list third party advisory vendor advisory
https://security.gentoo.org/glsa/202011-06	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html	third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html	third party advisory mailing list
http://www.openwall.com/lists/oss-security/2021/01/19/6	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2020-27673?: CVE-2020-27673 has been scored as a medium severity vulnerability.
How to fix CVE-2020-27673?: To fix CVE-2020-27673, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27673 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2020-27673 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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