In the Linux kernel, the following vulnerability has been resolved: mlxsw: fix refcount leak in mlxsw_sp_vrs_lpm_tree_replace() When mlxsw_sp_vrs_lpm_tree_replace() fails after replacing some VRs, the error rollback loop does not correctly revert the preceding replacements. The loop decrements the index but fails to update the vr pointer, which still points to the VR that caused the failure. As a result, the condition and the rollback call always operate on the same VR, potentially calling mlxsw_sp_vr_lpm_tree_replace() multiple times on it while never rolling back the earlier VRs. Those VRs continue to hold a reference to new_tree acquired via mlxsw_sp_lpm_tree_hold(), leaking the reference count of new_tree. Fix by reinitializing vr inside the error loop with the updated index: vr = &mlxsw_sp->router->vrs[i]; so that the loop correctly iterates over all VRs that were actually replaced.

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

  - mlxsw: fix refcount leak in mlxsw_sp_vrs_lpm_tree_replace() When mlxsw_sp_vrs_lpm_tree_replace() fails     after replacing some VRs, the error rollback loop does not correctly revert the preceding replacements.
    The loop decrements the index but fails to update the vr pointer, which still points to the VR that caused     the failure. As a result, the condition and the rollback call always operate on the same VR, potentially     calling mlxsw_sp_vr_lpm_tree_replace() multiple times on it while never rolling back the earlier VRs.
    Those VRs continue to hold a reference to new_tree acquired via mlxsw_sp_lpm_tree_hold(), leaking the     reference count of new_tree. Fix by reinitializing vr inside the error loop with the updated index: vr =     &mlxsw_sp->router->vrs[i]; so that the loop correctly iterates over all VRs that were actually replaced.
    (CVE-2026-72307)

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
343049	Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-500248)	Nessus	Oracle Linux Local Security Checks	Local	high
337819	Linux Distros Unpatched Vulnerability : CVE-2026-72307	Nessus	Misc.	Local	medium
337224	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2026-129 (ALASKERNEL-5.10-2026-129)	Nessus	Amazon Linux Local Security Checks	Local	high
334784	Photon OS 5.0: Linux PHSA-2026-5.0-92-0952	Nessus	PhotonOS Local Security Checks	Local	high

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CVE-2026-72307

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