In the Linux kernel, the following vulnerability has been resolved: 8021q: delete cleared egress QoS mappings vlan_dev_set_egress_priority() currently keeps cleared egress priority mappings in the hash as tombstones. Repeated set/clear cycles with distinct skb priorities therefore accumulate mapping nodes until device teardown and leak memory. Delete mappings when vlan_prio is cleared instead of keeping tombstones. Now that the egress mapping lists are RCU protected, the node can be unlinked safely and freed after a grace period.

ubuntu_linux USN-8663-1: Ubuntu 24.04 LTS / Ubuntu 26.04 LTS / Ubuntu Pro Realtime 24.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-8663-1)

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

  - 8021q: delete cleared egress QoS mappings vlan_dev_set_egress_priority() currently keeps cleared egress     priority mappings in the hash as tombstones. Repeated set/clear cycles with distinct skb priorities     therefore accumulate mapping nodes until device teardown and leak memory. Delete mappings when vlan_prio     is cleared instead of keeping tombstones. Now that the egress mapping lists are RCU protected, the node     can be unlinked safely and freed after a grace period. (CVE-2026-46153)

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

ID	Name	Product	Family	Type	Severity
340045	Ubuntu 26.04 LTS : Linux kernel (NVIDIA BaseOS) vulnerabilities (USN-8664-1)	Nessus	Ubuntu Local Security Checks	Local	high
339249	EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-3216)	Nessus	Huawei Local Security Checks	Local	high
339226	EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-3176)	Nessus	Huawei Local Security Checks	Local	high
332872	EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-3021)	Nessus	Huawei Local Security Checks	Local	high
332791	EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-2971)	Nessus	Huawei Local Security Checks	Local	high
317554	Linux Distros Unpatched Vulnerability : CVE-2026-46153	Nessus	Misc.	Local	medium

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