CVE-2024-36033

Slab-data disclosure via unchecked board-ID response

Published May 30, 2024 · Updated May 11, 2026

Information disclosure in Linux kernel 6.7 through 6.8.9 allows local users to expose slab data during QCA firmware loading. The qca_read_fw_board_id function reads two board-ID bytes from a short controller response without first verifying that the response contains them, then uses the value in a firmware request. Reachability requires an affected kernel and QCA2066 Bluetooth hardware during initialization; the disclosed material is limited to the two slab bytes consumed as the board identifier.

CVSS severity7.1
High
EPSS probability0.25%
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 Linux kernel 6.7 through 6.8.9 allows local users to expose slab data during QCA firmware loading. The qca_read_fw_board_id function reads two board-ID bytes from a short controller response without first verifying that the response contains them, then uses the value in a firmware request. Reachability requires an affected kernel and QCA2066 Bluetooth hardware during initialization; the disclosed material is limited to the two slab bytes consumed as the board identifier.

The record

CVE
CVE-2024-36033
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.7
  2. Affected versionversion=a381ee26d7c70dbc048cd17c4e0f40619118ff1f <ba307abed5e09759845c735ba036f8c12f55b209
  3. Affected versionversion=a7f8dedb4be2cc930a29af24427b885405ecd15d <0adcf6be1445ed50bfd4a451a7a782568f270197
  4. Affected versionversion=a7f8dedb4be2cc930a29af24427b885405ecd15d <f30c37cb4549baf8377434892d520fe7769bdba7
  5. Affected versionversion=ad643241d455fdd2516d46cfa54bd0c5e504fc86 <bcccdc947d2ca5972b1e92d0dea10803ddc08ceb
  6. Affected versionversion=c3c1bd421db6187ee455995bfbf1ba16d98f5e6b <a3dff121a7f5104c4c2d47edaa2351837ef645dd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=a381ee26d7c70dbc048cd17c4e0f40619118ff1f <ba307abed5e09759845c735ba036f8c12f55b209; version=a7f8dedb4be2cc930a29af24427b885405ecd15d <0adcf6be1445ed50bfd4a451a7a782568f270197; version=a7f8dedb4be2cc930a29af24427b885405ecd15d <f30c37cb4549baf8377434892d520fe7769bdba7; version=ad643241d455fdd2516d46cfa54bd0c5e504fc86 <bcccdc947d2ca5972b1e92d0dea10803ddc08ceb; version=c3c1bd421db6187ee455995bfbf1ba16d98f5e6b <a3dff121a7f5104c4c2d47edaa2351837ef645dd

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
2.3Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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