CVE-2026-23180
Description
A flaw was found in the Linux kernel's dpaa2-switch component. The Interrupt Request (IRQ) handler improperly validates the 'if_id' value extracted from the hardware status register before using it to access an internal array. This lack of validation allows an attacker to provide an 'if_id' that can lead to an out-of-bounds read. This vulnerability could result in information disclosure, data corruption, or a denial of service.
Mitigation
To mitigate this vulnerability, prevent the `dpaa2_switch` kernel module from loading. Create `/etc/modprobe.d/dpaa2_switch.conf` with the following content:
`install dpaa2_switch /bin/true`
After creating the file, regenerate the initramfs and reboot the system for the changes to take effect. Disabling this module may impact network functionality if dpaa2-switch hardware is in use.
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 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | High | 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 | Low | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | Low | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Understanding the Weakness (CWE)
Other
Technical Impact: Varies by Context
Frequently Asked Questions
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