CVE-2024-36032

Kernel stack disclosure via unchecked build-info length

Published May 30, 2024 · Updated Aug 5, 2026

Information disclosure in the Linux QCA Bluetooth driver allows attackers to read kernel stack data from debugfs after malformed firmware replies. qca_read_fw_build_info() trusted the controller-supplied build-label length without confirming that the reply contained that many bytes, then exposed residual stack contents through the firmware-information field. Reachability requires the QCA Bluetooth path, a malformed build-info reply, and access to the exported debugfs field; the bounded consequence is kernel-memory disclosure.

CVSS severity8.1
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the Linux QCA Bluetooth driver allows attackers to read kernel stack data from debugfs after malformed firmware replies. qca_read_fw_build_info() trusted the controller-supplied build-label length without confirming that the reply contained that many bytes, then exposed residual stack contents through the firmware-information field. Reachability requires the QCA Bluetooth path, a malformed build-info reply, and access to the exported debugfs field; the bounded consequence is kernel-memory disclosure.

The record

CVE
CVE-2024-36032
Published
May 30, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-668, T1005
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. May 30, 2024CVE 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=5.12
  2. Affected versionversion=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <57062aa13e87b1a78a4a8f6cb5fab6ba24f5f488
  3. Affected versionversion=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <62d5550ab62042dcceaf18844d0feadbb962cffe
  4. Affected versionversion=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <6b63e0ef4d3ce0080395e5091fba2023f246c45a
  5. Affected versionversion=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <a571044cc0a0c944e7c12237b6768aeedd7480e1
  6. Affected versionversion=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <cda0d6a198e2a7ec6f176c36173a57bdd8af7af2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5.12; version=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <57062aa13e87b1a78a4a8f6cb5fab6ba24f5f488; version=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <62d5550ab62042dcceaf18844d0feadbb962cffe; version=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <6b63e0ef4d3ce0080395e5091fba2023f246c45a; version=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <a571044cc0a0c944e7c12237b6768aeedd7480e1; version=c0187b0bd3e94c48050687d87b2c3c9fbae98ae9 <cda0d6a198e2a7ec6f176c36173a57bdd8af7af2

Published CVSS scores

2.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
8.1kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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