Vulnerability · Published Jun 29, 2021 · Assigned by XEN
CVE-2021-28690
Medium 6.5
In plain English
A medium-severity security flaw in xen from Xen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.0%top 37.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xen | 4.15.0-r1 | ALPINE-CVE-2021-28690 |
| Alpine:v3.21 | xen | 4.15.0-r1 | ALPINE-CVE-2021-28690 |
| Alpine:v3.22 | xen | 4.15.0-r1 | ALPINE-CVE-2021-28690 |
| Alpine:v3.23 | xen | 4.15.0-r1 | ALPINE-CVE-2021-28690 |
| Alpine:v3.24 | xen | 4.15.0-r1 | ALPINE-CVE-2021-28690 |
| Debian:12 | xen | 4.14.2+25-gb6a8c4f72d-1 | DEBIAN-CVE-2021-28690 |
| Debian:13 | xen | 4.14.2+25-gb6a8c4f72d-1 | DEBIAN-CVE-2021-28690 |
| Debian:14 | xen | 4.14.2+25-gb6a8c4f72d-1 | DEBIAN-CVE-2021-28690 |
| Ubuntu:22.04:LTS | xen | no fix listed | UBUNTU-CVE-2021-28690 |
| Ubuntu:24.04:LTS | xen | no fix listed | UBUNTU-CVE-2021-28690 |
| Ubuntu:25.10 | xen | no fix listed | UBUNTU-CVE-2021-28690 |
| Ubuntu:26.04:LTS | xen | no fix listed | UBUNTU-CVE-2021-28690 |
| Ubuntu:26.10 | xen | no fix listed | UBUNTU-CVE-2021-28690 |
Affected products (as reported)
References
- https://xenbits.xenproject.org/xsa/advisory-377.txt x_refsource_MISC
- GLSA-202107-30 vendor-advisory, x_refsource_GENTOO