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VulnerabilityPublished Updated

CVE-2025-39732: Linux kernel · wifi: ath11k: fix sleeping-in-atomic in ath11k_mac_op_set_bitrate_mask()

Affects Linux kernelSource CVE Database V5

0

Not known to be exploited · CVSS 7.8 High · fixed in 65c12b104cb942d588a1a093acc4537fb3d3b129 : patch Linux kernel soon.

Data as of 26 Oct 2026, 20:49 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CISA SSVC
Exploitation
No evidence of active exploitation and no public proof of concept
Automatable
Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact
Total control over the software or total information disclosure

CISA SSVC assessment, 2026-10-15.

Patch
Available – fixed in 65c12b104cb942d588a1a093acc4537fb3d3b129, 9c0e3144924c7db701575a73af341d33184afeaf, 7d4d0db0dc9424de2bdc0b45e919e4892603356f +2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 65c12b104cb942d588a1a093acc4537fb3d3b129
Fixed in
  • 65c12b104cb942d588a1a093acc4537fb3d3b129
LinuxLinuxAffected
  • ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 9c0e3144924c7db701575a73af341d33184afeaf
Fixed in
  • 9c0e3144924c7db701575a73af341d33184afeaf
LinuxLinuxAffected
  • ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 7d4d0db0dc9424de2bdc0b45e919e4892603356f
Fixed in
  • 7d4d0db0dc9424de2bdc0b45e919e4892603356f
LinuxLinuxAffected
  • ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 6bdef22d540258ca06f079f7b6ae100669a19b47
Fixed in
  • 6bdef22d540258ca06f079f7b6ae100669a19b47
LinuxLinuxAffected
  • ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 1f45a710c82b29d4c501b1cb472dff68d59ecc8c
Fixed in
  • 1f45a710c82b29d4c501b1cb472dff68d59ecc8c
LinuxLinuxAffected
  • =5.6
Fixed in–

AI-suggested

A fix is available and has been applied in Linux kernel version 5.6 and later commits identified by specific hashes. Users should update to a patched kernel version that includes these fixes. Since this is a kernel-level issue, applying the official kernel update is the recommended remediation.

Description

CVE-2025-39732 is a high-severity vulnerability in the Linux kernel's ath11k wireless driver. It involves improper use of an iterator function that may sleep in an atomic context, causing kernel warnings and potential instability. The issue is fixed by changing the iterator to a mutex-based version. The vulnerability affects Linux kernel version 5.6 and has been resolved in subsequent commits.

References

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