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: rxrpc: Also unshare DATA/RESPONSE     packets when paged frags are present The DATA-packet handler in rxrpc_input_call_event() and the RESPONSE     handler in rxrpc_verify_response() copy the skb to a linear one before calling into the security ops only     when skb_cloned() is true. An skb that is not cloned but still carries externally-owned paged fragments     (e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via __ip_append_data, or a chained     skb_has_frag_list()) falls through to the in-place decryption path, which binds the frag pages directly     into the AEAD/skcipher SGL via skb_to_sgvec(). Extend the gate to also unshare when skb_has_frag_list() or     skb_has_shared_frag() is true. This catches the splice-loopback vector and other externally-shared frag     sources while preserving the zero-copy fast path for skbs whose frags are kernel-private (e.g. NIC     page_pool RX, GRO). The OOM/trace handling already in place is reused. (CVE-2026-43500)

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

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Linux Distros Unpatched Vulnerability : CVE-2026-43500

high Nessus Plugin ID 313243

Version 1.22