CVE-2026-64155

Service interruption via ath11k socket-buffer leaks

Published Jul 19, 2026 · Updated Jul 19, 2026

Resource leak in the Linux Kernel ath11k driver allows local users to interrupt service through failed Wake-on-Wireless commands. The ath11k_wmi_wow_host_wakeup_ind and ath11k_wmi_wow_enable paths return an ath11k_wmi_cmd_send error without freeing the allocated socket buffer. Exploitation requires local low-privileged access, an ath11k Wi-Fi device, and repeated error paths; the bounded impact is resource exhaustion and service interruption.

CVSS severity5.5
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux Kernel ath11k driver allows local users to interrupt service through failed Wake-on-Wireless commands. The ath11k_wmi_wow_host_wakeup_ind and ath11k_wmi_wow_enable paths return an ath11k_wmi_cmd_send error without freeing the allocated socket buffer. Exploitation requires local low-privileged access, an ath11k Wi-Fi device, and repeated error paths; the bounded impact is resource exhaustion and service interruption.

The record

CVE
CVE-2026-64155
Published
Jul 19, 2026
Updated
Jul 19, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-772, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 19, 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=5.11
  2. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <008955b1348452de25bc19d6e0f0f673d4cb9a3c
  3. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <3d675896ea03aca631852a2a7e91e6cb8f664967
  4. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <55dda532bbc261aef495e403c8900c5e2ab5fa34
  5. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <acde4692afcdaea6de3e2996ddfaeaa7ae6b0130
  6. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <cd43d587dd333517c806cd24696e6e1a26b9951e
  7. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <d618d322b95c80d5ad7091f35a7193e4050dcc27
  8. Affected versionversion=79802b13a492d0fdeb922e98628e5ff1a8b74026 <d6c7b8d0dc22c0a8743435db8f42d98524b70df3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=5.11; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <008955b1348452de25bc19d6e0f0f673d4cb9a3c; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <3d675896ea03aca631852a2a7e91e6cb8f664967; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <55dda532bbc261aef495e403c8900c5e2ab5fa34; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <acde4692afcdaea6de3e2996ddfaeaa7ae6b0130; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <cd43d587dd333517c806cd24696e6e1a26b9951e; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <d618d322b95c80d5ad7091f35a7193e4050dcc27; version=79802b13a492d0fdeb922e98628e5ff1a8b74026 <d6c7b8d0dc22c0a8743435db8f42d98524b70df3

Published CVSS scores

5.5Red HatCVSS: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

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-772Missing Release of Resource after Effective Lifetime
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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