CVE-2025-39746

System crash via unbounded recovery attempts

Published Sep 11, 2025 · Updated Sep 11, 2025

Denial of service in the Linux kernel ath10k PCI driver allows local users to crash the system during resume after PCIe loss. The recovery path repeatedly queues hardware restarts after WMI commands time out, without bounding consecutive failures or preventing overlapping recovery work. Reachability requires compatible ath10k PCI hardware to lose its bus connection; the resulting power-management watchdog timeout panics the host.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel ath10k PCI driver allows local users to crash the system during resume after PCIe loss. The recovery path repeatedly queues hardware restarts after WMI commands time out, without bounding consecutive failures or preventing overlapping recovery work. Reachability requires compatible ath10k PCI hardware to lose its bus connection; the resulting power-management watchdog timeout panics the host.

The record

CVE
CVE-2025-39746
Published
Sep 11, 2025
Updated
Sep 11, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <201c9b4485edc618863a60f97a2d88bddd139467
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <84ca5632b8d05d1c2e25604d1d63434b2fb61c85
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c256a94d1b1b15109740306f7f2a7c2173e12072
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e36991bddf8be63e79659f654cdb1722db4e8132

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <201c9b4485edc618863a60f97a2d88bddd139467; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <84ca5632b8d05d1c2e25604d1d63434b2fb61c85; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c256a94d1b1b15109740306f7f2a7c2173e12072; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e36991bddf8be63e79659f654cdb1722db4e8132

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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