CVE-2026-68464
Description
A flaw was found in the Linux kernel's sdhci-esdhc-imx driver. When the system enters suspend mode without disabling the usdhc interrupt, and a Wi-Fi out-of-band wakeup triggers a system resume, a card interrupt can be sent before the usdhc driver has fully resumed. This can result in an unhandled interrupt, leading to system instability or a denial of service.
Statement
This vulnerability is rated Moderate rather than Important because exploitation is limited to a local denial of service requiring specific hardware and power state transitions, with no direct compromise of system confidentiality or integrity. The issue only manifests on platforms equipped with NXP i.MX SD/MMC host controllers configured with out-of-band Wi-Fi wakeup during system suspend and resume cycles. Standard enterprise server and cloud deployments of Red Hat Enterprise Linux do not run on this hardware architecture or utilize this power management configuration, substantially minimizing exposure.
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 | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | High | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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