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CVE-2024-26976 is a lifecycle flaw in the Linux kernel KVM subsystem's asynchronous page-fault (async #PF) handling. During vCPU teardown, KVM did not reliably flush pending per-vCPU async #PF workqueue callbacks. A callback could therefore execute after its associated vCPU or VM had been destroyed, potentially dereferencing freed memory. The condition could also allow the KVM module to be unloaded before outstanding callbacks completed. The fix flushes relevant async #PF work during completion-queue clearing and handles work removed from the completion queue, while avoiding a teardown deadlock caused by retaining a VM reference in the callback.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A locally exploitable vulnerability affecting Unity Linux systems, requiring low privileges and high attack complexity, with potential high impact to confidentiality, integrity, and availability.
A Linux KVM vulnerability involving failure to flush asynchronous page-fault work when a virtual CPU is destroyed.
Linux kernel KVM asynchronous page-fault workqueue cleanup flaw.
Linux kernel KVM asynchronous page-fault workqueue cleanup flaw.
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.