What is the severity of CVE-2021-28690?

CVE-2021-28690 is considered a significant vulnerability related to the TSX Async Abort speculative execution issue.

How do I fix CVE-2021-28690?

To mitigate CVE-2021-28690, it is recommended to disable TSX as the default option.

What software versions are affected by CVE-2021-28690?

CVE-2021-28690 affects several versions of Xen, specifically versions up to 4.15.0.

Is there a patch available for CVE-2021-28690?

Yes, patches for CVE-2021-28690 are included in newer versions of the Xen software.

What is TSX Async Abort in relation to CVE-2021-28690?

TSX Async Abort refers to a speculative execution vulnerability that can lead to unauthorized access to sensitive information.

Vulnerability/
CVE-2021-28690

medium

6.5

29/6/2021

3/8/2024

CVE-2021-28690

First published: Tue Jun 29 2021(Updated: )

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.

Credit: security@xen.org

Affected Software	Affected Version	How to fix
debian/xen		4.11.4+107-gef32c7afa2-1 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1
Xen xen-unstable	>=4.12<=4.15.0
Xen xen-unstable	=4.15.0-rc1

Remedy

https://xenbits.xenproject.org/xsa/advisory-377.txt

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-28690?
CVE-2021-28690 is considered a significant vulnerability related to the TSX Async Abort speculative execution issue.
How do I fix CVE-2021-28690?
To mitigate CVE-2021-28690, it is recommended to disable TSX as the default option.
What software versions are affected by CVE-2021-28690?
CVE-2021-28690 affects several versions of Xen, specifically versions up to 4.15.0.
Is there a patch available for CVE-2021-28690?
Yes, patches for CVE-2021-28690 are included in newer versions of the Xen software.
What is TSX Async Abort in relation to CVE-2021-28690?
TSX Async Abort refers to a speculative execution vulnerability that can lead to unauthorized access to sensitive information.

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