CVE-2021-28690

6.5 mediumEPSS 1.0%

Medium (6.5) in xen xen. EPSS 1.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
Published: 2021-06-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

xen:xen

References

https://security.gentoo.org/glsa/202107-30
https://xenbits.xenproject.org/xsa/advisory-377.txt
https://security.gentoo.org/glsa/202107-30
https://xenbits.xenproject.org/xsa/advisory-377.txt

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