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CVE-2025-38250 is a race-condition use-after-free in the Linux kernel Bluetooth HCI core virtual HCI implementation. When the final reference to a VHCI file descriptor is released, vhci_release() unregisters the HCI device and frees its associated VHCI data. Concurrently, an ioctl-triggered hci_dev_reset() operation may retain a previously obtained device reference and invoke vhci_flush(), which accesses the freed data. The missing synchronization between device unlinking and in-flight reset operations permits a slab use-after-free. The upstream fix places hci_dev_reset() under SRCU protection and makes hci_unregister_dev() wait for in-flight reset completion before teardown.
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21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel Bluetooth HCI core use-after-free vulnerability in vhci_flush().
A use-after-free vulnerability in the Linux kernel Bluetooth hci_core component's vhci_flush() function.
A use-after-free vulnerability in the Linux kernel Bluetooth hci_core vhci_flush() function.
Use-after-free vulnerability in the Linux kernel Bluetooth hci_core vhci_flush() function.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.