CVE-2026-64408
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: pin L2CAP connection during netdev registration bnep_add_connection() reads the L2CAP connection without holding the channel lock, then passes its HCI device to register_netdev(). Controller teardown can clear and release that connection concurrently, leaving the network device registration path to dereference a freed parent device. Take a reference to the L2CAP connection while holding the channel lock. Retain it until register_netdev() has taken the parent device reference.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.26% probability · 18th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/390b5db3ff8745187f094c4e915663b7b1f98944Patch
- https://git.kernel.org/stable/c/46a88784c4c9b96954dd86f747ce93f65efa1302Patch
- https://git.kernel.org/stable/c/551ae773ec64045b4e72099132654887e0270bccPatch
- https://git.kernel.org/stable/c/563a8573047182f550b1e1e030615755cd8c41daPatch
- https://git.kernel.org/stable/c/a6b22dbd80926556290ad2243be25218d6956a19Patch
- https://git.kernel.org/stable/c/ae215c5b6422d8eda443b861b124bd1be6969c31Patch
- https://git.kernel.org/stable/c/bb067a99a0356196c0b89a95721985485ebce5a5Patch
- https://git.kernel.org/stable/c/df22adc7eafc22e651561813c11dc51a796b12eePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.