Bug 2164382 (CVE-2021-46795) - CVE-2021-46795 hw: amd: TOCTOU (time-of-check to time-of-use) vulnerability cause memory out of bound results in a denial of service
Summary: CVE-2021-46795 hw: amd: TOCTOU (time-of-check to time-of-use) vulnerability c...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-46795
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2160446
TreeView+ depends on / blocked
 
Reported: 2023-01-25 12:16 UTC by Rohit Keshri
Modified: 2023-01-27 23:22 UTC (History)
37 users (show)

Fixed In Version:
Doc Type: ---
Doc Text:
A Time-of-check to time-of-use (TOCTOU) vulnerability exists in hw. This flaw allows an attacker to use a compromised BIOS to cause the trusted execution environment (TEE) operating system to read memory out-of-bounds, potentially resulting in a denial of service.
Clone Of:
Environment:
Last Closed: 2023-01-27 23:22:14 UTC
Embargoed:

Attachments (Terms of Use)

Description Rohit Keshri 2023-01-25 12:16:26 UTC 
A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

Reference:
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1031
Comment 1 Rohit Keshri 2023-01-25 12:49:06 UTC 
Affected Products:
------------------
AMD Athlon™ Processors
AMD Ryzen™ Processors
AMD Threadripper™ Processors
Comment 4 Product Security DevOps Team 2023-01-27 23:22:11 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-2021-46795
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