CVE-2025-40347
Description
A deadlock vulnerability was found in the NXP ENETC network driver in the Linux kernel. On RT kernels with the err050089 workaround, recursive acquisition of enetc_mdio_lock occurs when the TX path is invoked from within the RX NAPI poll context. This causes RCU stalls and system hangs.
Statement
This specifically affects NXP LS1028A platforms running RT (PREEMPT_RT) kernels. Standard kernels and other platforms are unaffected. The deadlock causes complete system hang.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | 7.5 |
| Attack Vector | Local | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Availability,Integrity
Technical Impact: DoS: Resource Consumption (CPU); DoS: Crash, Exit, or Restart; Unexpected State
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