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CVE-2024-40904 is an uncontrolled resource-consumption flaw in the Linux kernel USB CDC-WDM driver. The interrupt-URB completion callback immediately resubmits interrupt URBs that complete with an -EPROTO error while issuing unratelimited error messages for each completion. A sustained stream of such failures can produce thousands of kernel-log writes per second; the logging overhead causes the callback path to run long enough to trigger a soft CPU lockup. The fix replaces the affected dev_err() calls with dev_err_ratelimited().
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Patch, then assume compromise.
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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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel USB CDC-WDM issue that can cause a CPU lockup through excessive log messages.
Linux kernel CDC-WDM USB-class CPU-lockup vulnerability caused by excessive logging.
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.