BaseFortify

Publication date: 2025-12-30

Last updated on: 2025-12-31

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: MIPS: fw: Allow firmware to pass a empty env fw_getenv will use env entry to determine style of env, however it is legal for firmware to just pass a empty list. Check if first entry exist before running strchr to avoid null pointer dereference.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2025-12-30

Last Modified

2025-12-31

Generated

2026-07-06

AI Q&A

2025-12-30

EPSS Evaluated

2026-07-05

NVD

CVE-2023-54279

EUVD

EUVD-2023-60525

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability in the Linux kernel's MIPS firmware interface occurs because the function fw_getenv assumes that the environment list passed by firmware contains entries. However, it is valid for the firmware to pass an empty environment list. The function did not check if the first entry exists before using strchr, which could lead to a null pointer dereference.

Impact Analysis

This vulnerability can cause a null pointer dereference in the Linux kernel when processing firmware environment variables, potentially leading to a kernel crash or system instability.

Hi! I’m here to help you understand CVE-2023-54279. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70