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CVE-2023-52477 is a NULL-pointer dereference in the Linux kernel USB hub subsystem. USB hub code accesses fields of a USB device's Binary Object Store (BOS) descriptor structure without consistently verifying that the structure was allocated and initialized. If BOS descriptor retrieval fails, the structure remains NULL; subsequent hub operations, including port-reset processing and checks or setup associated with Link Power Management, SuperSpeed capabilities, and U1/U2 states, can dereference it. The fix introduces fallback behavior when the BOS descriptor is unavailable and skips functionality that depends on BOS data.
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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.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel USB hub vulnerability involving access to uninitialized BOS descriptors.
Linux kernel USB hub flaw involving access to uninitialized BOS descriptors.
Linux kernel USB hub uninitialized BOS-descriptor access vulnerability.
Linux kernel USB hub access to uninitialized BOS descriptors vulnerability.
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.