CVE-2025-37943

Kernel memory corruption via oversized Wi-Fi header

Published May 20, 2025 · Updated Aug 5, 2026

Out-of-bounds access in the Linux kernel ath12k driver allows physically proximate attackers to corrupt kernel memory over Wi-Fi. ath12k_dp_rx_h_undecap_nwifi processes a hardware-reported header longer than the 30-byte native Wi-Fi maximum and shifts fields beyond a fixed stack buffer. A crafted four-address QoS frame with the Order bit set triggers the path without association when the interface is active, causing memory disclosure, control-flow corruption, or a kernel panic.

CVSS severity7.8
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux kernel ath12k driver allows physically proximate attackers to corrupt kernel memory over Wi-Fi. ath12k_dp_rx_h_undecap_nwifi processes a hardware-reported header longer than the 30-byte native Wi-Fi maximum and shifts fields beyond a fixed stack buffer. A crafted four-address QoS frame with the Order bit set triggers the path without association when the interface is active, causing memory disclosure, control-flow corruption, or a kernel panic.

The record

CVE
CVE-2025-37943
Published
May 20, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record 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=6.3
  2. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <3abe15e756481c45f6acba3d476cb3ca4afc3b61
  3. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <50be1fb76556e80af9f5da80f28168b6c71bce58
  4. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <6ee653194ddb83674913fd2727b8ecfae0597ade
  5. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <7f1d986da5c6abb75ffe4d0d325fc9b341c41a1c
  6. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <9a0dddfb30f120db3851627935851d262e4e7acb

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <3abe15e756481c45f6acba3d476cb3ca4afc3b61; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <50be1fb76556e80af9f5da80f28168b6c71bce58; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <6ee653194ddb83674913fd2727b8ecfae0597ade; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <7f1d986da5c6abb75ffe4d0d325fc9b341c41a1c; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <9a0dddfb30f120db3851627935851d262e4e7acb

Published CVSS scores

7.0Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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