Loading vulnerability…
CVE-2026-46113 is a use-after-free vulnerability in the Linux kernel KVM x86 shadow MMU. When guest page tables are modified between VM entries, KVM can create a leaf shadow page-table entry and reverse-mapping entry using a guest frame number outside the range recorded for an existing direct-mapped shadow page. When the original memory slot and shadow MMU page are later invalidated, reverse-mapping removal misses the out-of-range entry, leaving a stale reverse mapping that references a freed kvm_mmu_page. A subsequent reverse-mapping walk can dereference the freed object. The fix detects target-GFN mismatches and zaps the existing SPTE before installing the replacement mapping and reverse mapping.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
31 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel KVM x86 shadow-paging use-after-free vulnerability triggered by an unexpected guest frame number (GFN).
A vulnerability addressed by the referenced CentOS 8/TuxCare security update; no technical flaw details are provided.
A vulnerability referenced in the TuxCare CentOS 8.5 local-security-check advisory.
A high-impact locally exploitable vulnerability affecting Unity Linux systems. It requires low privileges and no user interaction, and can lead to high confidentiality, integrity, and availability impact across a changed security scope.
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.