Bug 1970545 (CVE-2021-28690) - CVE-2021-28690 xen: x86: TSX Async Abort protections not restored after S3 (XSA-377)
Summary: CVE-2021-28690 xen: x86: TSX Async Abort protections not restored after S3 (X...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-28690
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1970546
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-06-10 16:43 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-06-10 21:04 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2021-06-10 21:04:10 UTC
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Description Guilherme de Almeida Suckevicz 2021-06-10 16:43:26 UTC 
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.

Reference:
https://xenbits.xen.org/xsa/advisory-377.html
Comment 1 Guilherme de Almeida Suckevicz 2021-06-10 16:43:43 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1970546]
Comment 2 Product Security DevOps Team 2021-06-10 21:04:10 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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