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

  - tipc: clear sock->sk on the failed-insert path in tipc_sk_create() When tipc_sk_create() fails to insert     the new socket (tipc_sk_insert() returns non-zero), its error path frees the sk with sk_free() but leaves     sock->sk pointing at the freed object: if (tipc_sk_insert(tsk)) { sk_free(sk); pr_warn(Socket create     failed; port number exhausted\n); return -EINVAL; } This is harmless for plain socket(): the syscall     layer clears sock->ops before releasing, so tipc_release() is never called. It is not harmless on the     accept() path. tipc_accept() creates the pre-allocated child socket with tipc_sk_create(net, new_sock, 0,     kern); on failure it leaves new_sock->sk dangling and new_sock->ops non-NULL, and do_accept() then fput()s     the new file, so __sock_release() -> tipc_release() runs lock_sock(new_sock->sk) on the freed sk -- a use-     after-free write of the sk_lock spinlock. tipc_release() already guards this exact failed accept()     releases a pre-allocated child case with if (sk == NULL) return 0;, but the guard is bypassed because     tipc_sk_create() left sock->sk non-NULL (dangling) rather than NULL. Clear sock->sk on the failed-insert     path so the existing tipc_release() NULL check fires and the use-after-free is avoided. The     tipc_sk_insert() failure is reached when the per-netns socket rhashtable hits its max_size     (tsk_rht_params.max_size = 1048576, ~2M elements) -- i.e. once a netns holds ~2M TIPC sockets every insert     returns -E2BIG. BUG: KASAN: slab-use-after-free in lock_sock_nested (net/core/sock.c:3839) Write of size 8     at addr ffff8880047cdc38 by task init/1 lock_sock_nested (net/core/sock.c:3839) tipc_release     (net/tipc/socket.c:638) __sock_release (net/socket.c:710) sock_close (net/socket.c:1501) __fput     (fs/file_table.c:512) Allocated by task 1: sk_alloc (net/core/sock.c:2308) tipc_sk_create     (net/tipc/socket.c:487) tipc_accept (net/tipc/socket.c:2744) do_accept (net/socket.c:2034) Freed by task     1: __sk_destruct (net/core/sock.c:2391) tipc_sk_create (net/tipc/socket.c:504) tipc_accept     (net/tipc/socket.c:2744) do_accept (net/socket.c:2034) (CVE-2026-68117)

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Linux Distros Unpatched Vulnerability : CVE-2026-68117

critical Nessus Plugin ID 334279

Version 1.19