Bug 2477784 (CVE-2025-54518) - CVE-2025-54518 kernel: xen: AMD Zen 2 Processors: Privilege escalation via improper CPU cache isolation
Summary: CVE-2025-54518 kernel: xen: AMD Zen 2 Processors: Privilege escalation via im...
Keywords:
Status: NEW
Alias: CVE-2025-54518
Product: Security Response
Classification: Other
Component: vulnerability-draft
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-15 05:01 UTC by OSIDB Bzimport
Modified: 2026-09-10 08:50 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:50978 0 None None None 2026-08-06 03:30:08 UTC
Red Hat Product Errata RHSA-2026:50979 0 None None None 2026-08-06 03:08:29 UTC
Red Hat Product Errata RHSA-2026:53329 0 None None None 2026-08-11 09:09:17 UTC
Red Hat Product Errata RHSA-2026:53989 0 None None None 2026-08-12 00:41:31 UTC
Red Hat Product Errata RHSA-2026:53990 0 None None None 2026-08-12 00:58:00 UTC
Red Hat Product Errata RHSA-2026:54769 0 None None None 2026-08-18 12:25:21 UTC
Red Hat Product Errata RHSA-2026:55444 0 None None None 2026-08-17 02:31:36 UTC
Red Hat Product Errata RHSA-2026:56573 0 None None None 2026-08-19 00:59:44 UTC
Red Hat Product Errata RHSA-2026:57402 0 None None None 2026-08-26 16:32:57 UTC
Red Hat Product Errata RHSA-2026:57457 0 None None None 2026-08-25 13:52:17 UTC
Red Hat Product Errata RHSA-2026:57543 0 None None None 2026-08-25 13:54:33 UTC
Red Hat Product Errata RHSA-2026:59091 0 None None None 2026-08-24 14:33:10 UTC
Red Hat Product Errata RHSA-2026:59831 0 None None None 2026-09-03 12:01:25 UTC
Red Hat Product Errata RHSA-2026:60019 0 None None None 2026-09-03 08:59:03 UTC
Red Hat Product Errata RHSA-2026:62549 0 None None None 2026-09-10 08:50:50 UTC

Description OSIDB Bzimport 2026-05-15 05:01:50 UTC 
Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege level, potentially resulting in privilege escalation.
Comment 4 errata-xmlrpc 2026-08-06 03:08:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:50979 https://access.redhat.com/errata/RHSA-2026:50979
Comment 5 errata-xmlrpc 2026-08-06 03:30:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:50978 https://access.redhat.com/errata/RHSA-2026:50978
Comment 6 errata-xmlrpc 2026-08-11 09:09:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:53329 https://access.redhat.com/errata/RHSA-2026:53329
Comment 7 errata-xmlrpc 2026-08-12 00:41:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:53989 https://access.redhat.com/errata/RHSA-2026:53989
Comment 8 errata-xmlrpc 2026-08-12 00:57:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:53990 https://access.redhat.com/errata/RHSA-2026:53990
Comment 9 errata-xmlrpc 2026-08-17 02:31:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:55444 https://access.redhat.com/errata/RHSA-2026:55444
Comment 10 errata-xmlrpc 2026-08-18 12:25:20 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.22

Via RHSA-2026:54769 https://access.redhat.com/errata/RHSA-2026:54769
Comment 11 errata-xmlrpc 2026-08-19 00:59:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:56573 https://access.redhat.com/errata/RHSA-2026:56573
Comment 12 errata-xmlrpc 2026-08-24 14:33:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:59091 https://access.redhat.com/errata/RHSA-2026:59091
Comment 13 errata-xmlrpc 2026-08-25 13:52:15 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.21

Via RHSA-2026:57457 https://access.redhat.com/errata/RHSA-2026:57457
Comment 14 errata-xmlrpc 2026-08-25 13:54:32 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.20

Via RHSA-2026:57543 https://access.redhat.com/errata/RHSA-2026:57543
Comment 15 errata-xmlrpc 2026-08-26 16:32:55 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.19

Via RHSA-2026:57402 https://access.redhat.com/errata/RHSA-2026:57402
Comment 16 errata-xmlrpc 2026-09-03 08:59:01 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.17

Via RHSA-2026:60019 https://access.redhat.com/errata/RHSA-2026:60019
Comment 17 errata-xmlrpc 2026-09-03 12:01:23 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.12

Via RHSA-2026:59831 https://access.redhat.com/errata/RHSA-2026:59831
Comment 18 Rohit Keshri 2026-09-09 10:26:15 UTC 
This cve is assigned by AMD for only BIOS update, so all kernel affects are not affected.
For kernel affected CVE-2026-46174 is the correct candidate, and is being worked.
Comment 19 errata-xmlrpc 2026-09-10 08:50:49 UTC 
This issue has been addressed in the following products:

  Red Hat OpenShift Container Platform 4.16

Via RHSA-2026:62549 https://access.redhat.com/errata/RHSA-2026:62549
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