Bug 2174765 (CVE-2022-27672) - CVE-2022-27672 kernel: AMD: Cross-Thread Return Address Predictions
Summary: CVE-2022-27672 kernel: AMD: Cross-Thread Return Address Predictions
Keywords:
Status: NEW
Alias: CVE-2022-27672
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2174769 2233080 2233081 2233082 2233083
Blocks: 2170028
TreeView+ depends on / blocked
 
Reported: 2023-03-02 12:26 UTC by Alex
Modified: 2023-11-21 11:24 UTC (History)
46 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in HW. When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch, potentially resulting in information disclosure.
Clone Of:
Environment:
Last Closed: 2023-03-02 16:17:10 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:7370 0 None None None 2023-11-21 11:24:43 UTC
Red Hat Product Errata RHSA-2023:7379 0 None None None 2023-11-21 10:25:07 UTC

Description Alex 2023-03-02 12:26:24 UTC 
A flaw was found in HW. When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch potentially resulting in information disclosure.

References:
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1045
https://www.openwall.com/lists/oss-security/2023/02/14/4
https://xenbits.xen.org/xsa/advisory-426.html
https://kernel.org/doc/html//next/admin-guide/hw-vuln/cross-thread-rsb.html
Comment 3 Product Security DevOps Team 2023-03-02 16:17:07 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-27672
Comment 11 errata-xmlrpc 2023-11-21 10:25:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2023:7379 https://access.redhat.com/errata/RHSA-2023:7379
Comment 12 errata-xmlrpc 2023-11-21 11:24:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2023:7370 https://access.redhat.com/errata/RHSA-2023:7370
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