CVE-2026-53113

Root-only service interruption via beacon-template memory leak

Published Jun 24, 2026 · Updated Jun 24, 2026

Memory leak in the ath11k Wi-Fi driver in Linux Kernel 6.5 through 7.0.9 allows local users to exhaust kernel memory during AP setup. The ath11k_mac_setup_bcn_tmpl_ema() and ath11k_mac_setup_bcn_tmpl_mbssid() functions allocate beacon templates but omit freeing them when parameter setup fails. Exploitation requires uid 0 or CAP_NET_ADMIN in the initial user namespace and a physical ath11k device configured in AP mode, making reachability effectively root-only.

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

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory leak in the ath11k Wi-Fi driver in Linux Kernel 6.5 through 7.0.9 allows local users to exhaust kernel memory during AP setup. The ath11k_mac_setup_bcn_tmpl_ema() and ath11k_mac_setup_bcn_tmpl_mbssid() functions allocate beacon templates but omit freeing them when parameter setup fails. Exploitation requires uid 0 or CAP_NET_ADMIN in the initial user namespace and a physical ath11k device configured in AP mode, making reachability effectively root-only.

The record

CVE
CVE-2026-53113
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=335a92765d308dfe22826f5562cd4b4389b45e71 <5d63aa38d5ca85206d9699ffdd616b58780dba07
  2. Affected versionversion=335a92765d308dfe22826f5562cd4b4389b45e71 <ff49eba595df500e4ddccc593088c8a4ab5f2c27
  3. Affected versionversion=6.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=335a92765d308dfe22826f5562cd4b4389b45e71 <5d63aa38d5ca85206d9699ffdd616b58780dba07; version=335a92765d308dfe22826f5562cd4b4389b45e71 <ff49eba595df500e4ddccc593088c8a4ab5f2c27; version=6.5

Published CVSS scores

5.5Canonical UbuntuCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo