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CVE-2025-39982 is a use-after-free vulnerability in the Linux kernel Bluetooth subsystem affecting hci_acl_create_conn_sync and similar connection-creation handling in hci_le_create_conn_sync. A connection object can be freed while it remains in the BT_OPEN state pending command submission, allowing the command synchronization worker to access released memory. Connection-completion event processing releases the object through hci_conn_del while connection creation is still using it. KASAN detected a two-byte write to freed slab memory on Linux 6.16.0-rc7. The flaw can cause kernel memory corruption.
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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.
19 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel vulnerability addressed by the referenced AlmaLinux/TuxCare update.
A Linux kernel Bluetooth use-after-free vulnerability in hci_acl_create_conn_sync within hci_event handling.
A Linux kernel Bluetooth use-after-free vulnerability in hci_acl_create_conn_sync.
A Linux kernel Bluetooth use-after-free vulnerability in hci_acl_create_conn_sync.
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.