wifi: ath11k: fix sleeping-in-atomic in ath11k_mac_op_set_bitrate_mask()
CVE-2025-39732 · published 7 Sept 2025
How serious is it
- Severity: high, CVSS score 7.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2025-39732?
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Who is affected
- Linux Linux: d5c65159f2895379e11ca13f62feabe93278985d to < 1f45a710c82b29d4c501b1cb472dff68d59ecc8c, d5c65159f2895379e11ca13f62feabe93278985d to < 9c0e3144924c7db701575a73af341d33184afeaf, d5c65159f2895379e11ca13f62feabe93278985d to < 7d4d0db0dc9424de2bdc0b45e919e4892603356f, d5c65159f2895379e11ca13f62feabe93278985d to < 6bdef22d540258ca06f079f7b6ae100669a19b47
- Linux Linux: 5.6
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
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- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath11k: fix sleeping-in-atomic in ath11k_mac_op_set_bitrate_mask()
ath11k_mac_disable_peer_fixed_rate() is passed as the iterator to
ieee80211_iterate_stations_atomic(). Note in this case the iterator is
required to be atomic, however ath11k_mac_disable_peer_fixed_rate() does
not follow it as it might sleep. Consequently below warning is seen:
BUG: sleeping function called from invalid context at wmi.c:304
Call Trace:
<TASK>
dump_stack_lvl
__might_resched.cold
ath11k_wmi_cmd_send
ath11k_wmi_set_peer_param
ath11k_mac_disable_peer_fixed_rate
ieee80211_iterate_stations_atomic
ath11k_mac_op_set_bitrate_mask.cold
Change to ieee80211_iterate_stations_mtx() to fix this issue.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/1f45a710c82b29d4c501b1cb472dff68d59ecc8c
- git.kernel.org/stable/c/9c0e3144924c7db701575a73af341d33184afeaf
- git.kernel.org/stable/c/7d4d0db0dc9424de2bdc0b45e919e4892603356f
- git.kernel.org/stable/c/6bdef22d540258ca06f079f7b6ae100669a19b47
- git.kernel.org/stable/c/65c12b104cb942d588a1a093acc4537fb3d3b129
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON