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CVE-2022-49910 is a use-after-free vulnerability in the Linux kernel Bluetooth L2CAP implementation. A race occurs between l2cap_reassemble_sdu, which queues a socket buffer through the socket receive callback, and bt_sock_recvmsg, which can immediately dequeue and free that buffer. Some callers continue accessing struct l2cap_ctrl in the buffer's control area after l2cap_reassemble_sdu returns, resulting in access to freed memory. A KASAN report demonstrates a one-byte use-after-free read in l2cap_rx_state_recv. The fix preserves a local copy of struct l2cap_ctrl.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A CVE listed in the advisory references, but the provided content does not describe the underlying vulnerability.
A CVE referenced by the Red Hat Enterprise Linux 7 kernel security advisory; the supplied content does not describe the flaw.
Unknown; the advisory lists this CVE but provides no vulnerability description.
An important Linux kernel Bluetooth L2CAP use-after-free vulnerability (CWE-416). It results from a race condition involving l2cap_reassemble_sdu and socket receive processing while Bluetooth is in use, with potential confidentiality, integrity, and availability impact. Red Hat assigns CVSS 7.1 for its products.
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.