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CVE-2024-26933 is a deadlock in the Linux kernel USB core's handling of the port-level "disable" sysfs attribute. Its show and store callbacks acquire the parent hub device lock. Concurrent hub removal or configuration change removes the hub interface and its port devices; device_del() then waits for active sysfs callbacks to finish while retaining the lock required by the callback. The callback cannot return until it obtains that lock, resulting in deadlock. The fix breaks sysfs active protection before acquiring the hub lock, preventing device removal from waiting on the callback, and obtains a hub reference beforehand to prevent use of a deallocated hub structure.
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Linux kernel USB core deadlock vulnerability in the port disable sysfs attribute.
Linux kernel USB core deadlock vulnerability in the port disable sysfs attribute.
Linux kernel USB core deadlock in the port disable sysfs attribute.
A Linux kernel USB core deadlock affecting the port "disable" sysfs attribute. The issue was resolved upstream and addressed through Red Hat Enterprise Linux 8 and 9 advisories.
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.