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CVE-2025-39746

20
FAUCET Score

CVE-2025-39746 addresses a vulnerability in the Linux kernel's ath10k Wi-Fi driver, affecting Linux kernel products. This flaw can lead to system crashes due to watchdog timeouts when the ath10k driver loses connection with the PCIe bus, causing repeated hardware restarts. Rated as Medium severity (CVSS 5.5), it is a local vulnerability requiring low privileges, with a high impact on system availability. There is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules, though it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.11, < 6.12.43CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.13, < 6.15.11CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 6.16, < 6.16.2CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
4.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 26th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

ubuntupatch availablevia ubuntu_usn
Product: linux-xilinx (noble)Fixed in: 6.8.0-1023.24
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm-6.8 (jammy)Fixed in: 6.8.0-1044.44~22.04.1
ubuntupatch availablevia ubuntu_usn
Product: linux-ibm (noble)Fixed in: 6.8.0-1044.44
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-fips (noble)Fixed in: 6.8.0-1046.52+fips1
ubuntupatch availablevia ubuntu_usn
Product: linux-azure (noble)Fixed in: 6.8.0-1046.52
ubuntupatch availablevia ubuntu_usn
Product: linux-azure-6.8 (jammy)Fixed in: 6.8.0-1051.57~22.04.1
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt

Vendor Advisories (7)

ubuntuUSN-8126-1

Linux kernel (Azure) vulnerabilities

Mar 25, 2026
ubuntuUSN-8074-2

Linux kernel (Azure FIPS) vulnerabilities

Mar 4, 2026
ubuntuUSN-8074-1

Linux kernel (Azure) vulnerabilities

Mar 4, 2026
ubuntuUSN-8052-2

Linux kernel (Xilinx) vulnerabilities

Feb 24, 2026
ubuntuUSN-8028-8

Linux kernel (IBM) vulnerabilities

Feb 24, 2026
redhatCVE-2025-39746Moderate

kernel: wifi: ath10k: shutdown driver when hardware is unreliable

Sep 11, 2025
microsoft2025-Sep/CVE-2025-39746Important

wifi: ath10k: shutdown driver when hardware is unreliable

Sep 9, 2025

References

git.kernel.org / stable/c/201c9b4485edc618863a60f97a2d88bddd139467
Patch
git.kernel.org / stable/c/84ca5632b8d05d1c2e25604d1d63434b2fb61c85
Patch
git.kernel.org / stable/c/c256a94d1b1b15109740306f7f2a7c2173e12072
Patch
git.kernel.org / stable/c/e36991bddf8be63e79659f654cdb1722db4e8132
Patch