CVE-2021-28690

Description

x86: TSX Async Abort protections not restored after S3 This issue relates to the TSX Async Abort speculative security vulnerability. Please see https://xenbits.xen.org/xsa/advisory-305.html for details. Mitigating TAA by disabling TSX (the default and preferred option) requires selecting a non-default setting in MSR_TSX_CTRL. This setting isn't restored after S3 suspend.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.36%

Vendor Advisory gentoo.org Vendor Advisory xenproject.org

Affected: Xen xen

References

Link	Tags
https://xenbits.xenproject.org/xsa/advisory-377.txt	patch vendor advisory
https://security.gentoo.org/glsa/202107-30	third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28690?: CVE-2021-28690 has been scored as a medium severity vulnerability.
How to fix CVE-2021-28690?: To fix CVE-2021-28690, 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-2021-28690 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-28690 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.
What software or system is affected by CVE-2021-28690?: CVE-2021-28690 affects Xen xen, Xen xen, Xen xen.

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