CVE-2025-39746
wifi: ath10k: shutdown driver when hardware is unreliable
Reported by linux · Published September 11, 2025
In the Linux kernel, the following vulnerability has been resolved: wifi: ath10k: shutdown driver when hardware is unreliable In rare cases, ath10k may lose connection with the PCIe bus due to some unknown reasons, which could further lead to system crashes during resuming due to watchdog timeout: ath10k_pci 0000:01:00.0: wmi command 20486 timeout, restarting hardware ath10k_pci 0000:01:00.0: already restarting ath10k_pci 0000:01:00.0: failed to stop WMI vdev 0: -11 ath10k_pci 0000:01:00.0: failed to stop vdev 0: -11 ieee80211 phy0: PM: **** DPM device timeout **** Call Trace: panic+0x125/0x315 dpm_watchdog_set+0x54/0x54 dpm_watchdog_handler+0x57/0x57 call_timer_fn+0x31/0x13c At this point, all WMI commands will timeout and attempt to restart device. So set a threshold for consecutive restart failures. If the threshold is exceeded, consider the hardware is unreliable and all ath10k operations should be skipped to avoid system crash. fail_cont_count and pending_recovery are atomic variables, and do not involve complex conditional logic. Therefore, even if recovery check and reconfig complete are executed concurrently, the recovery mechanism will not be broken. Tested-on: QCA6174 hw3.2 PCI WLAN.RM.4.4.1-00288-QCARMSWPZ-1
EPSS 0.16% · 5.0th percentile
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5 |
| Linux | Linux | 3.11, 0, 6.12.43 |
| linux | linux_kernel | 3.11, 3.11, 3.11 |
| Linux | Linux | 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5 |
Timeline
- Sep 11, 2025 Coalition ESS Score (9 in total, the first dated here)
- Sep 11, 2025 CVE Published
- Sep 12, 2025 EPSS Score (30 in total, the first dated here)
- Oct 12, 2025 PoC Published (9 in total, the first dated here)
- Dec 15, 2025 Security Advisory (188 in total, the first dated here)
- Mar 29, 2026 Distribution Patch (175 in total, the first dated here)
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