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CVE-2022-50386 is a use-after-free vulnerability in the Linux kernel Bluetooth L2CAP subsystem. Incorrect L2CAP channel lifetime handling can allow code to access a channel after its reference count has reached zero and the channel has been destroyed. The failure manifests as a KASAN-detected use-after-free during mutex locking. The upstream fix obtains a channel reference with l2cap_chan_hold_unless_zero() after __l2cap_get_chan_blah(), preventing use of a channel that is being or has been released.
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What an attacker gets, and what they’ve been doing with it.
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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.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Linux kernel Bluetooth L2CAP component.
A use-after-free flaw in the Linux kernel Bluetooth L2CAP subsystem.
Use-after-free vulnerability in the Linux kernel Bluetooth L2CAP implementation.
Use-after-free vulnerability in the Linux kernel Bluetooth L2CAP component.
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.