The remote Ubuntu 24.04 LTS / 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8816-1 advisory.

    Several security issues were discovered in the Linux kernel. An attacker could possibly use these to     compromise the system. This update corrects flaws in the following subsystems:

    - ARM64 architecture;

    - S390 architecture;

    - x86 architecture;

    - DRBD Distributed Replicated Block Device drivers;

    - InfiniBand drivers;

    - IOMMU subsystem;

    - Multiple devices driver;

    - Network drivers;

    - Microsoft Azure Network Adapter (MANA) driver;

    - NVME drivers;

    - TCM subsystem;

    - Virtio Host (VHOST) subsystem;

    - Xen hypervisor drivers;

    - AFS file system;

    - File systems infrastructure;

    - Network file systems library;

    - Network file system (NFS) client;

    - NTFS3 file system;

    - OCFS2 file system;

    - OrangeFS file system;

    - SMB network file system;

    - IPv4 networking;

    - Sun RPC protocol;

    - IPv6 networking;

    - IP tunnels definitions;

    - Netfilter;

    - TCP network protocol;

    - Locking primitives;

    - 9P file system network protocol;

    - B.A.T.M.A.N. meshing protocol;

    - Networking core;

    - IFE protocol;

    - RxRPC session sockets;

    - Network traffic control;

    - SCTP protocol;

    - SMC sockets;

    - TIPC protocol;

    - XFRM subsystem; (CVE-2026-64530, CVE-2026-64534, CVE-2026-64535, CVE-2026-64541, CVE-2026-64551,     CVE-2026-68083, CVE-2026-68457, CVE-2026-68476, CVE-2026-68477, CVE-2026-72014, CVE-2026-72020,     CVE-2026-72033, CVE-2026-72041, CVE-2026-72046, CVE-2026-72064, CVE-2026-72065, CVE-2026-72069,     CVE-2026-72083, CVE-2026-72084, CVE-2026-72085, CVE-2026-72098, CVE-2026-72129, CVE-2026-72130,     CVE-2026-72137, CVE-2026-72139, CVE-2026-72191, CVE-2026-72192, CVE-2026-72194, CVE-2026-72217,     CVE-2026-72220, CVE-2026-72221, CVE-2026-72222, CVE-2026-72226, CVE-2026-72234, CVE-2026-72248,     CVE-2026-72249, CVE-2026-72251, CVE-2026-72277, CVE-2026-72278, CVE-2026-72279, CVE-2026-72287,     CVE-2026-72288, CVE-2026-72289, CVE-2026-72296, CVE-2026-72299, CVE-2026-72317, CVE-2026-72318,     CVE-2026-72319, CVE-2026-72320, CVE-2026-72322, CVE-2026-72323, CVE-2026-72329, CVE-2026-72339,     CVE-2026-72348, CVE-2026-72351, CVE-2026-72355, CVE-2026-72366, CVE-2026-72381, CVE-2026-72393,     CVE-2026-72398, CVE-2026-72399, CVE-2026-72412, CVE-2026-72417, CVE-2026-72422, CVE-2026-72429,     CVE-2026-72436, CVE-2026-72442, CVE-2026-72451, CVE-2026-72463, CVE-2026-72466, CVE-2026-72472,     CVE-2026-72473, CVE-2026-72477, CVE-2026-72491, CVE-2026-72493, CVE-2026-72494, CVE-2026-72495,     CVE-2026-72496, CVE-2026-72501, CVE-2026-74255, CVE-2026-74267, CVE-2026-74268, CVE-2026-74269,     CVE-2026-74287, CVE-2026-74310, CVE-2026-74345, CVE-2026-74350, CVE-2026-74361, CVE-2026-74376,     CVE-2026-74384, CVE-2026-74394, CVE-2026-74398, CVE-2026-74401, CVE-2026-74406, CVE-2026-74427,     CVE-2026-74428, CVE-2026-74433, CVE-2026-74434, CVE-2026-74436, CVE-2026-74439, CVE-2026-80665)

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

Note that Nessus has not tested for these issues 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.

  - In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: support IPIP     tunnel with direct xmit The combination of IPIP tunnel with direct xmit, eg. bridge device, breaks because     no dst_entry is provided to check the skb headroom and to set the iph->frag_off field. This leads to     invalid dst usage and can trigger a crash in the tunnel transmit path. Fix this by moving dst_cache and     dst_cookie out of the runtime union so that they can be shared by neighbour, xfrm, and direct tunnel     flows. For FLOW_OFFLOAD_XMIT_DIRECT tuples carrying tunnel metadata, preserve route state in these shared     fields and release it through the common dst release path. Since dst_entry is now available to the three     supported xmit modes and dst_release() already deals with NULL dst, remove the xmit type check in     nft_flow_dst_release(). Moreover, skip the check if the dst entry is NULL in nf_flow_dst_check() which is     now the case for the direct xmit case. Based on patch from Rein Wei <n05ec@lzu.edu.cn>. (CVE-2026-72248)

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

ID	Name	Product	Family	Published	Updated	Severity
377578	Ubuntu 24.04 LTS / 26.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-9003-1)	Nessus	Ubuntu Local Security Checks	11/9/2026	11/9/2026	medium
350177	Ubuntu 24.04 LTS / 26.04 LTS : Linux kernel vulnerabilities (USN-8816-1)	Nessus	Ubuntu Local Security Checks	9/25/2026	11/11/2026	critical
381344	Ubuntu 26.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-9043-1)	Nessus	Ubuntu Local Security Checks	11/14/2026	11/14/2026	medium
337445	Linux Distros Unpatched Vulnerability : CVE-2026-72248	Nessus	Misc.	8/18/2026	11/13/2026	critical
365768	Ubuntu 26.04 LTS : Linux kernel (Azure) vulnerabilities (USN-8888-1)	Nessus	Ubuntu Local Security Checks	10/14/2026	10/14/2026	medium

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