Home/CVE/x86: TSX Async Abort protections not restored after S3 This issue relates to the TSX Async Abort speculative security vu
CVE

CVE-2021-28690

x86: TSX Async Abort protections not restored after S3 This issue relates to the TSX Async Abort speculative security vu

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.

MEDIUM · CVSS 6.5 EPSS 0.00357
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
▤

Affected Products & Versions

2
xen>= 4.12 and <= 4.15.0
xenall versions
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security@xen.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Jun 2021 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

11
suse-csafSUSE-SU-2021:14848-1
suse-csafSUSE-SU-2021:3322-1
suse-csafopenSUSE-SU-2021:1236-1
suse-csafSUSE-SU-2021:2957-1
suse-csafSUSE-SU-2021:2943-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://security.gentoo.org/glsa/202107-30Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-377.txtPatchVendor Advisory
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