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CVE-2026-46056 is a potential use-after-free vulnerability in the Linux kernel Bluetooth hci_event component. The hci_user_passkey_notify_evt() and hci_keypress_notify_evt() Secure Simple Pairing (SSP) handlers do not fully protect hci_conn lookup and subsequent field access with the Bluetooth device lock. A connection object can consequently be freed concurrently while either handler continues accessing it. The vulnerability can potentially cause kernel memory corruption, system instability, or denial of service.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
23 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A kernel SRPM security issue addressed by the CIQ LTS 9.2 advisory ciqsa-2026_1575.
A potential use-after-free vulnerability in Linux kernel Bluetooth SSP passkey handlers.
A named vulnerability addressed by the referenced Red Hat Enterprise Linux kernel-package update; technical flaw details are not provided.
A potential use-after-free vulnerability in the Linux kernel Bluetooth HCI SSP passkey handlers.
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.