PT-2020-4727 · Linux+5 · Linux Kernel+5
Julien Grall
·
Published
2020-10-20
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Updated
2023-08-22
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CVE-2020-27673
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions:
Linux kernel versions up to 5.9.1
Xen versions up to 4.14.x
Description:
An issue in the Linux kernel allows guest OS users to cause a denial of service, resulting in a host OS hang, by sending a high rate of events to dom0. This issue is related to uncontrolled resource consumption, which can be exploited by an attacker to cause a service disruption.
Recommendations:
For Linux kernel versions up to 5.9.1, consider applying configuration changes to limit the rate of events to dom0 as a temporary workaround.
For Xen versions up to 4.14.x, restrict access to dom0 to minimize the risk of exploitation until a patch is available.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linuxmint
Linux Kernel
Suse
Ubuntu
Xen