VDB
RHSA-2026:53989
RHSA-2026:53989
PUBLISHED
CVSS 6.300000190734863 MEDIUM
A flaw was found in AMD Zen 2-based processors, affecting components such as the kernel and Xen hypervisor. Improper isolation of shared resources within the CPU operation cache could allow an attacker to corrupt instructions executed at a different privilege level. This could potentially result in privilege escalation, granting an attacker higher system access than intended.
Risk Scores
CVSS 3.1
6.300000190734863
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | bpftool-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debuginfo-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-tools-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-tools-libs-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | python3-perf-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-modules-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | bpftool-debuginfo-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debuginfo-common-x86_64-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-doc-0:4.18.0-372.206.1.el8_6.noarch as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debug-core-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | perf-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debug-devel-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-tools-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | perf-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-doc-0:4.18.0-372.206.1.el8_6.noarch as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debuginfo-common-x86_64-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-devel-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debuginfo-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
| Red Hat | kernel-debug-debuginfo-0:4.18.0-372.206.1.el8_6.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.6) | 4.18.0-372.206.1.el8 |
…and 30 more
Timeline
- Aug 12, 2026 CVE Published
- Aug 24, 2026 CVE Updated
- Aug 24, 2026 Distribution Patch
- Aug 24, 2026 Distribution Patch
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
- Aug 24, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:53989 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2464092 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2467015 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2467059 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2477784 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2492277 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_53989.json advisory
- https://access.redhat.com/security/cve/CVE-2025-54518 advisory
- https://www.cve.org/CVERecord?id=CVE-2025-54518 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-54518 advisory
- http://www.openwall.com/lists/oss-security/2026/05/12/15 advisory
- http://xenbits.xen.org/xsa/advisory-490.html advisory
- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7052.html advisory
- https://access.redhat.com/security/cve/CVE-2026-31787 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-31787 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-31787 advisory
- https://lore.kernel.org/linux-cve-announce/2026043034-CVE-2026-31787-f6cc@gregkh/T advisory
- https://access.redhat.com/security/cve/CVE-2026-43112 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-43112 advisory
…and 10 more