CVE-2023-53264

Service interruption via probe error memory leaks

Published Sep 16, 2025 · Updated Sep 16, 2025

A memory leak in the i.MX RT1050 clock driver in Linux 5.18 through 6.4.3 allows local users to interrupt service via probe failures. The imxrt1050_clocks_probe function leaves of_iomap mappings and kzalloc allocations unreleased when later initialization steps fail, and it does not unregister already-created hardware clock handles after an iomap failure. Reachability requires local low-privileged access and an i.MX RT1050 system whose clock-driver probe enters an error path; repeated leaks can exhaust kernel resources and halt service.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A memory leak in the i.MX RT1050 clock driver in Linux 5.18 through 6.4.3 allows local users to interrupt service via probe failures. The imxrt1050_clocks_probe function leaves of_iomap mappings and kzalloc allocations unreleased when later initialization steps fail, and it does not unregister already-created hardware clock handles after an iomap failure. Reachability requires local low-privileged access and an i.MX RT1050 system whose clock-driver probe enters an error path; repeated leaks can exhaust kernel resources and halt service.

The record

CVE
CVE-2023-53264
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-401, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2025Record 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=5.18
  2. Affected versionversion=7154b046d8f3a441474ced1688eb348d42f5f165 <02e54db221bb001b32f839e0149ee8d890ab9aa1
  3. Affected versionversion=7154b046d8f3a441474ced1688eb348d42f5f165 <0fbdfd2542252e4c02e8158a06b7c0c9cfd40f99
  4. Affected versionversion=7154b046d8f3a441474ced1688eb348d42f5f165 <1839032251a66f2ae5a043c495532830a55d28c4
  5. Affected versionversion=7154b046d8f3a441474ced1688eb348d42f5f165 <1b280598ab3bd8a2dc8b96a12530d5b1ee7a8f4a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=7154b046d8f3a441474ced1688eb348d42f5f165 <02e54db221bb001b32f839e0149ee8d890ab9aa1; version=7154b046d8f3a441474ced1688eb348d42f5f165 <0fbdfd2542252e4c02e8158a06b7c0c9cfd40f99; version=7154b046d8f3a441474ced1688eb348d42f5f165 <1839032251a66f2ae5a043c495532830a55d28c4; version=7154b046d8f3a441474ced1688eb348d42f5f165 <1b280598ab3bd8a2dc8b96a12530d5b1ee7a8f4a

Published CVSS scores

5.5CISA ADP VulnrichmentCVSS: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-401Missing Release of Memory after Effective Lifetime
T1499Endpoint Denial of Service

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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