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

  - batman-adv: tt: fix TOCTOU race for reported vlans The local TT based TVLV is generated by first checking     the number of VLANs which have at least one TT entry. A new buffer with the correct size for the VLANs is     then allocated. Only then, the list of VLANs s used to fill the VLAN entries in the buffer. During this     time, the meshif_vlan_list_lock is held. But the actual number of TT entries of each VLAN can still     increase during this time - just not the number of VLANs in the list. But the prefilter used in the buffer     size calculation might still cause an increase of the number of VLANs which need to be stored. Simply     because a VLAN might now suddenly have at least one entry when it had none in the pre-alloc check - and     then needs to occupy space which was not allocated. It is better to overestimate the buffer size at the     beginning and then fill the buffer only with the VLANs which are not empty. (CVE-2026-64091)

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	Published	Updated	Severity
328254	Linux Distros Unpatched Vulnerability : CVE-2026-64091	Nessus	Misc.	7/20/2026	7/29/2026	critical
322944	Photon OS 5.0: Linux PHSA-2026-5.0-0895	Nessus	PhotonOS Local Security Checks	6/26/2026	8/1/2026	high
329326	Photon OS 5.0: Linux PHSA-2026-5.0-0926	Nessus	PhotonOS Local Security Checks	7/24/2026	7/28/2026	high

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