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CVE-2024-26933 is a deadlock in the Linux kernel USB core's per-port "disable" sysfs attribute handlers. The attribute show and store callbacks acquire the parent USB hub device lock. Concurrent hub removal or hub-configuration change removes the hub interface and its port devices; device removal waits for active port sysfs callbacks to return, while a callback can be blocked waiting for the hub lock held by the removal or reconfiguration path. This circular wait prevents either operation from completing. The upstream fix breaks sysfs active protection before acquiring the hub lock and obtains a hub reference first, preventing both the removal wait and a hub lifetime race.
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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.
Linux kernel USB core sysfs port-disable deadlock vulnerability.
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Every observed campaign linking this CVE to a named adversary.
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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.