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CVE-2025-39981 is a use-after-free vulnerability in the Linux kernel Bluetooth management subsystem. A struct mgmt_pending object can be freed while asynchronous command processing still references it. Pending commands left accessible on the pending list can also be accessed or freed concurrently, creating use-after-free and possible double-free conditions. A KASAN trace demonstrated an invalid read in mgmt_add_adv_patterns_monitor_sync during hci_cmd_sync_work processing, with the object freed through Bluetooth power-off and device-close processing. The vulnerability can cause kernel memory corruption, potentially leading to privilege escalation or denial of service. The issue was introduced in upstream Linux 5.17 and fixed in 6.16.10 and 6.17; distribution kernels may contain backported vulnerable code or fixes.
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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.
24 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel Bluetooth MGMT use-after-free vulnerability.
A Linux kernel Bluetooth MGMT use-after-free vulnerability.
Possible use-after-free vulnerabilities in the Linux kernel Bluetooth management subsystem. Red Hat provides fixes through RHSA-2026:10108; a reboot is required for the update to take effect.
A Linux kernel Bluetooth MGMT use-after-free 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.