CVE-2023-54279
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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.
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Meta Information
Published
2025-12-30
Last Modified
2025-12-31
Generated
2026-06-16
AI Q&A
2025-12-30
EPSS Evaluated
2026-06-15
NVD
CVE-2023-54279
EUVD
EUVD-2023-60525
Affected Vendors & Products
Currently, no data is known.
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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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.

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