Medium severity · published Jun 29, 2021
CVE-2021-28690
x86: TSX Async Abort protections not restored after S3 This issue relates to the TSX Async Abort speculative security vulnerability
6.5
CVSS
1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
4.12 through 4.15.0; 4.15.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28690
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28690
Third Party Advisory
https://security.gentoo.org/glsa/202107-30
Patch
https://xenbits.xenproject.org/xsa/advisory-377.txt
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