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CVE-2025-54518 is a hardware isolation flaw affecting AMD Zen 2-based processors. Improper isolation of shared resources within the CPU operation cache can allow a local attacker to corrupt instructions that are executed at a different privilege level. In practical terms, the weakness breaks expected privilege-domain separation at the microarchitectural level, creating a path for lower-privileged code to influence higher-privileged execution. The issue has been referenced in kernel and Xen security updates as an x86/CPU/AMD problem requiring changes to prevent improper isolation in Zen 2's op cache.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
41 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability referenced in multiple SUSE kernel security advisories, but not described in detail in the content.
AMD CPU OP Cache Corruption vulnerability addressed in SUSE kernel-source updates and referenced by AMD security bulletin AMD-SB-7052.
Improper isolation of shared resources within the CPU operation cache on AMD Zen 2-based products that could enable privilege escalation.
A CPU opcode cache corruption vulnerability affecting certain AMD Fam17h (Zen2) CPUs that can allow code to execute at a higher privilege, including userspace-to-kernel and guest-to-host escalation in Xen environments.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.