What is CVE-2021-28690?

CVE-2021-28690 is a medium-severity vulnerability in Xen. CVSS score: 6.5/10. Published 2021-06-29.

How severe is CVE-2021-28690?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Xen

CVE-2021-28690

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.

EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Xen — versions unspecified, 4.11.x, next of xen-unstable

References

security@xen.org (Patch, x_refsource_MISC, Vendor Advisory)
security@xen.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)

Frequently asked questions

What is CVE-2021-28690?: CVE-2021-28690 is a medium-severity vulnerability in Xen. CVSS score: 6.5/10. Published 2021-06-29.
How severe is CVE-2021-28690?: Medium severity. CVSS v3 base score is 6.5 out of 10.