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VulnerabilityPublished Updated

CVE-2025-39746: Linux kernel · wifi: ath10k: shutdown driver when hardware is unreliable

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e36991bddf8be63e79659f654cdb1722db4e8132 : patch Linux kernel soon.

Data as of 5 Nov 2026, 21:48 UTC

Severity
High

Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none
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
Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-05.

Patch
Available – fixed in e36991bddf8be63e79659f654cdb1722db4e8132, c256a94d1b1b15109740306f7f2a7c2173e12072, 201c9b4485edc618863a60f97a2d88bddd139467 +1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Sep 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 5 Nov 2026.

What to do

Upgrade Linux kernel to e36991bddf8be63e79659f654cdb1722db4e8132, c256a94d1b1b15109740306f7f2a7c2173e12072, 201c9b4485edc618863a60f97a2d88bddd139467 or 84ca5632b8d05d1c2e25604d1d63434b2fb61c85.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, < e36991bddf8be63e79659f654cdb1722db4e8132
Fixed in
  • e36991bddf8be63e79659f654cdb1722db4e8132
LinuxLinuxAffected
  • ≥ 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, < c256a94d1b1b15109740306f7f2a7c2173e12072
Fixed in
  • c256a94d1b1b15109740306f7f2a7c2173e12072
LinuxLinuxAffected
  • ≥ 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, < 201c9b4485edc618863a60f97a2d88bddd139467
Fixed in
  • 201c9b4485edc618863a60f97a2d88bddd139467
LinuxLinuxAffected
  • ≥ 5e3dd157d7e70f0e3cea3f2573ed69fb156a19d5, < 84ca5632b8d05d1c2e25604d1d63434b2fb61c85
Fixed in
  • 84ca5632b8d05d1c2e25604d1d63434b2fb61c85
LinuxLinuxAffected
  • =3.11
Fixed in–

AI-suggested

A fix is available in the Linux kernel as indicated by the listed fixed commit versions. Users should apply the updated kernel versions containing these fixes to prevent system crashes caused by this vulnerability.

Description

A vulnerability in the Linux kernel's ath10k WiFi driver can cause system crashes due to hardware unreliability. The driver may lose connection with the PCIe bus, leading to watchdog timeouts and system panics during resume operations. The fix involves shutting down the driver when hardware is deemed unreliable after consecutive restart failures to prevent crashes.

References

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