CVE-2023-54240
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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: net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all() rule_locs is allocated in ethtool_get_rxnfc and the size is determined by rule_cnt from user space. So rule_cnt needs to be check before using rule_locs 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-2023-54240
EUVD
EUVD-2023-60401
Affected Vendors & Products
Currently, no data is known.
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a possible NULL pointer dereference in the Linux kernel's MediaTek Ethernet driver (mtk_eth_soc). Specifically, in the function mtk_hwlro_get_fdir_all(), the code uses a pointer (rule_locs) that is allocated based on a size (rule_cnt) provided from user space. If rule_cnt is not properly checked before using rule_locs, it can lead to a NULL pointer dereference, which may cause the kernel to crash or behave unexpectedly.

Impact Analysis

This vulnerability can cause the Linux kernel to crash or become unstable due to a NULL pointer dereference. This may lead to denial of service (DoS) conditions on affected systems running the vulnerable MediaTek Ethernet driver, potentially disrupting network connectivity or system availability.

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