CVE-2026-46056
High
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the connection can be freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage in both handlers. Keep the existing keypress notification behavior unchanged by routing the early exits through a common unlock path.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Linux Kernel
PublishedMay 27, 2026
First seenMay 27, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- linux linux_kernel6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.7 ≤ v < 6.1.175, 6.2 ≤ v < 6.6.140, 6.7 ≤ v < 6.12.86, 6.13 ≤ v < 6.18.27, 6.19 ≤ v < 7.0.4 | 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.