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.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013134 advisory.

    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.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2023-54240)

Note that Nessus relies on the presence of the package as reported by the vendor.

An update of the linux package has been released.

ID	Name	Product	Family	Type	Severity
308107	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013134)	Nessus	Unity Linux Local Security Checks	Local	medium
297194	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:0315-1)	Nessus	SuSE Local Security Checks	Local	high
296680	SUSE SLES15: cluster-md-kmp-64kb / cluster-md-kmp-default / dlm-kmp-64kb / etc (SUSE-SU-2026:0293-1)	Nessus	SuSE Local Security Checks	Local	high
296676	SUSE SLES15: kernel-azure / kernel-azure-devel / kernel-devel-azure / etc (SUSE-SU-2026:0281-1)	Nessus	SuSE Local Security Checks	Local	high
296481	SUSE SLES15 Security Update : kernel (SUSE-SU-2026:0278-1)	Nessus	SuSE Local Security Checks	Local	high
281707	Linux Distros Unpatched Vulnerability : CVE-2023-54240	Nessus	Misc.	Local	medium
151965	Photon OS 4.0: Linux PHSA-2021-4.0-0065	Nessus	PhotonOS Local Security Checks	Local	high

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CVE-2023-54240

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