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CVE-2024-42302 is a use-after-free vulnerability in Linux kernel PCI Downstream Port Containment (DPC) handling. When a DPC event races with hot-removal in the same PCIe hierarchy, pci_bridge_wait_for_secondary_bus() polls the configuration space of the first child device on the secondary bus without retaining a reference to that device. Concurrent removal can free the child device while the DPC handler accesses its struct pci_dev. The vulnerable DPC path was introduced in Linux 6.3 and backported to stable Linux 5.10 and later kernels.
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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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity Linux kernel use-after-free in PCIe DPC handling and concurrent PCIe hot-removal. It can cause a kernel oops/page fault. The affected behavior was introduced for DPC handling in Linux kernel 6.3 and backported to stable 5.10+ kernels.
Use-after-free during concurrent PCI Downstream Port Containment and hot-removal.
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.