CVE-2023-53744

Description

The TI AM33xx power management driver in the Linux kernel fails to release reference counts acquired via wkup_m3_ipc_get() when errors occur during probe. Since the corresponding wkup_m3_ipc_put() call is missing from error paths, repeated probe failures gradually exhaust kernel resources.

Statement

This affects TI AM335x/AM437x SoC platforms running the pm33xx driver. The bug manifests only under error conditions during power management initialization, making real-world impact unlikely for most deployments.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score5.5N/AN/A
Attack VectorLocalN/AN/A
Attack ComplexityLowN/AN/A
Privileges RequiredLowN/AN/A
User InteractionNoneN/AN/A
ScopeUnchangedN/AN/A
ConfidentialityNoneN/AN/A
Integrity ImpactNoneN/AN/A
Availability ImpactHighN/AN/A

Vector

Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Understanding the Weakness (CWE)

CWE-911

Availability

Technical Impact: DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)

An adversary that can cause a resource counter to become inaccurate may be able to create situations where resources are not accounted for and not released, thus causing resources to become scarce for future needs.

Availability

Technical Impact: DoS: Crash, Exit, or Restart

An adversary that can cause a resource counter to become inaccurate may be able to force an error that causes the product to crash or exit out of its current operation.

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