CVE-2021-28690

MEDIUM

Xen 4.12-4.14 - TSX Async Abort Protections Not Restored After S3

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Patch, Vendor Advisory x_refsource_misc
https://xenbits.xenproject.org/xsa/advisory-377.txt
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202107-30

Scores

CVSS v3 6.5
EPSS 0.0036
EPSS Percentile 58.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

Status published
Products (2)
xen/xen 4.15.0 rc1
xen/xen 4.12 - 4.15.0
Published Jun 29, 2021
Tracked Since Feb 18, 2026