CVE-2025-38174
Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Do not double dequeue a configuration request Some of our devices crash in tb_cfg_request_dequeue(): general protection fault, probably for non-canonical address 0xdead000000000122 CPU: 6 PID: 91007 Comm: kworker/6:2 Tainted: G U W 6.6.65 RIP: 0010:tb_cfg_request_dequeue+0x2d/0xa0 Call Trace: <TASK> ? tb_cfg_request_dequeue+0x2d/0xa0 tb_cfg_request_work+0x33/0x80 worker_thread+0x386/0x8f0 kthread+0xed/0x110 ret_from_fork+0x38/0x50 ret_from_fork_asm+0x1b/0x30 The circumstances are unclear, however, the theory is that tb_cfg_request_work() can be scheduled twice for a request: first time via frame.callback from ring_work() and second time from tb_cfg_request(). Both times kworkers will execute tb_cfg_request_dequeue(), which results in double list_del() from the ctl->request_queue (the list poison deference hints at it: 0xdead000000000122). Do not dequeue requests that don't have TB_CFG_REQUEST_ACTIVE bit set.
How to fix
- linux linux_kernel5.4.295, 5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.33, 6.14.11, 6.15.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.17 ≤ v < 5.4.295, 5.5 ≤ v < 5.10.239, 5.11 ≤ v < 5.15.186, 5.16 ≤ v < 6.1.142, 6.2 ≤ v < 6.6.94, 6.7 ≤ v < 6.12.33, 6.13 ≤ v < 6.14.11, 6.15 ≤ v < 6.15.2 | 5.4.295, 5.10.239, 5.15.186, 6.1.142, 6.6.94, 6.12.33, 6.14.11, 6.15.2 |
| debian debian_linux | 11.0 | — |
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