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CVE-2020-27673

Good to know:

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Date: October 22, 2020

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.

Language: C

Severity Score

Related Resources (14)

https://security-tracker.debian.org/tracker/CVE-2020-27673
https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070
http://www.openwall.com/lists/oss-security/2021/01/19/6
https://xenbits.xen.org/xsa/advisory-332.html
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
https://security.gentoo.org/glsa/202011-06
https://access.redhat.com/security/cve/CVE-2020-27673
https://nvd.nist.gov/vuln/detail/CVE-2020-27673
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-27673
https://www.mend.io/vulnerability-database/CVE-2020-27673

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption

CWE-400

Insufficient Information

NVD-CWE-noinfo

Top Fix

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Upgrade Version

Upgrade to version linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-yocto - 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68;linux-libc-headers - 5.10

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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