CVE-2024-26801
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Avoid potential use-after-free in hci_error_reset While handling the HCI_EV_HARDWARE_ERROR event, if the underlying BT controller is not responding, the GPIO reset mechanism would free the hci_dev and lead to a use-after-free in hci_error_reset. Here's the call trace observed on a ChromeOS device with Intel AX201: queue_work_on+0x3e/0x6c __hci_cmd_sync_sk+0x2ee/0x4c0 [bluetooth <HASH:3b4a6>] ? init_wait_entry+0x31/0x31 __hci_cmd_sync+0x16/0x20 [bluetooth <HASH:3b4a 6>] hci_error_reset+0x4f/0xa4 [bluetooth <HASH:3b4a 6>] process_one_work+0x1d8/0x33f worker_thread+0x21b/0x373 kthread+0x13a/0x152 ? pr_cont_work+0x54/0x54 ? kthread_blkcg+0x31/0x31 ret_from_fork+0x1f/0x30 This patch holds the reference count on the hci_dev while processing a HCI_EV_HARDWARE_ERROR event to avoid potential crash.
How to fix
- linux linux_kernel4.19.309, 5.4.271, 5.10.212, 5.15.151, 6.1.81, 6.6.21, 6.7.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.0 ≤ v < 4.19.309, 4.20 ≤ v < 5.4.271, 5.5 ≤ v < 5.10.212, 5.11 ≤ v < 5.15.151, 5.16 ≤ v < 6.1.81, 6.2 ≤ v < 6.6.21, 6.7 ≤ v < 6.7.9, 6.8 | 4.19.309, 5.4.271, 5.10.212, 5.15.151, 6.1.81, 6.6.21, 6.7.9 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.