8.8
High
CVE-2026-46056 In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux 7.1 | earliest → < 7.1 | 7.1 |
| Linux 7.0 | earliest → < 7.0.4 | 7.0.4 |
| Linux 6.18 | earliest → < 6.18.27 | 6.18.27 |
| Linux 6.12 | earliest → < 6.12.86 | 6.12.86 |
| Linux 6.6 | earliest → < 6.6.140 | 6.6.140 |
| Linux 6.1 | earliest → < 6.1.175 | 6.1.175 |
| Linux 5.15 | earliest → < 5.15.210 | 5.15.210 |
| Linux 5.10 | earliest → < 5.10.259 | 5.10.259 |
| Linux | 3.7 | No fix stated |
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| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | Versions not published |
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