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CVE-2022-1158 is a local memory-corruption vulnerability in the Linux kernel Kernel-based Virtual Machine (KVM) component, introduced upstream in Linux kernel 5.2. When updating a guest page-table entry, the affected cmpxchg_gpte() path improperly uses the user-controlled vm_pgoff value as the offset for obtaining a page frame number (PFN). Because both vaddr and vm_pgoff are controllable from a host user-mode process, KVM can write to PFNs outside the intended userspace mapping. The resulting invalid write can corrupt kernel memory and may trigger exceptions, including use-after-free conditions.
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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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel vulnerability addressed by this kernel-rt update; no issue description is provided in the content.
Unknown.
Linux kernel vulnerability addressed by RHSA-2022:7683; no flaw details are provided in this advisory text.
A Linux kernel KVM flaw in which cmpxchg_gpte can write PFNs outside the userspace region.
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.