CVE-2023-53145

Kernel memory corruption via Bluetooth removal race

Published May 10, 2025 · Updated May 11, 2026

Use-after-free in affected Linux kernels allows local users to corrupt kernel memory by racing Bluetooth SDIO device removal. The btsdio_remove function frees hdev without first canceling unfinished btsdio_work, allowing that worker to dereference the freed object. Exploitation requires local low-privileged access, an SDIO Bluetooth device, and pending transmit work during driver removal.

CVSS severity7.8
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in affected Linux kernels allows local users to corrupt kernel memory by racing Bluetooth SDIO device removal. The btsdio_remove function frees hdev without first canceling unfinished btsdio_work, allowing that worker to dereference the freed object. Exploitation requires local low-privileged access, an SDIO Bluetooth device, and pending transmit work during driver removal.

The record

CVE
CVE-2023-53145
Published
May 10, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 10, 2025CVE 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

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=2.6.24
  2. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <179c65828593aff1f444e15debd40a477cb23cf4
  3. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e
  4. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <6c3653627397a0d6eab19b20a59423e118985a6b
  5. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <73f7b171b7c09139eb3c6a5677c200dc1be5f318
  6. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <746b363bef41cc159c051c47f9e30800bc6b520d
  7. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <a5c2a467e9e789ae0891de55b766daac52e3b7b3
  8. Affected versionversion=ddbaf13e3609442b64abb931ac21527772d87980 <a6650d27ab2c12a8ee750f396edb5ac8b4558b2e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.24; version=ddbaf13e3609442b64abb931ac21527772d87980 <179c65828593aff1f444e15debd40a477cb23cf4; version=ddbaf13e3609442b64abb931ac21527772d87980 <3efcbf25e5ab4d4ad1b7e6ba0869ff85540e3f6e; version=ddbaf13e3609442b64abb931ac21527772d87980 <6c3653627397a0d6eab19b20a59423e118985a6b; version=ddbaf13e3609442b64abb931ac21527772d87980 <73f7b171b7c09139eb3c6a5677c200dc1be5f318; version=ddbaf13e3609442b64abb931ac21527772d87980 <746b363bef41cc159c051c47f9e30800bc6b520d; version=ddbaf13e3609442b64abb931ac21527772d87980 <a5c2a467e9e789ae0891de55b766daac52e3b7b3; version=ddbaf13e3609442b64abb931ac21527772d87980 <a6650d27ab2c12a8ee750f396edb5ac8b4558b2e

Published CVSS scores

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1068Exploitation for Privilege Escalation

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

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