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
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: 2026-08-12 00:58 UTC (History)
2 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

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
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