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

  - net/smc: fix socket use-after-free during link group termination __smc_lgr_terminate() drops conns_lock     after finding a connection in lgr->conns_all, but before taking a reference on its socket. The connection     is embedded in the socket, and its registration reference protects it only while the connection remains in     the tree. A concurrent close can unregister the connection and drop that reference, freeing the socket     before the termination worker reaches sock_hold(). The race is reachable when close overlaps link group     termination. Local stress testing reproduced the use-after-free and KASAN reported: BUG: KASAN: slab-use-     after-free in __smc_lgr_terminate.part.0 [smc] Write of size 4 by task kworker/3:3 Workqueue: events     smc_lgr_terminate_work [smc] __smc_lgr_terminate.part.0 [smc] The socket was allocated by smc_create(),     freed through slab_free_after_rcu_debug(), and was followed by: refcount_t: addition on 0; use-after-free.
    __smc_lgr_terminate.part.0 [smc] Take the socket reference while conns_lock still protects the tree entry.
    The unregister path then cannot drop the last reference until termination has finished using the socket.
    (CVE-2026-74493)

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

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Linux Distros Unpatched Vulnerability : CVE-2026-74493

critical Nessus Plugin ID 335863

Version 1.12

Version 1.11

Version 1.10

Version 1.9

Version 1.8

Version 1.7

Version 1.6

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.12 Sep 3, 2026, 1:08 PM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin Feed: 202609031308
Version 1.11 Sep 2, 2026, 11:39 PM CVSS metrics ("CVSSv2 score" set to 7.2) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202609022339
Version 1.10 Aug 28, 2026, 12:16 PM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin Feed: 202608281216
Version 1.9 Aug 28, 2026, 2:04 AM CVSS metrics ("CVSSv2 score" set to 7.2) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608280204
Version 1.8 Aug 27, 2026, 3:41 PM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin Feed: 202608271541
Version 1.7 Aug 26, 2026, 1:14 PM CVSS metrics ("CVSSv2 score" set to 7.2) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608261314
Version 1.6 Aug 21, 2026, 11:26 PM CVSS metrics ("CVSSv2 score" set to 10.0) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C") Plugin Feed: 202608212326
Version 1.5 Aug 21, 2026, 7:41 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202608210741
Version 1.4 Aug 19, 2026, 10:20 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202608192220
Version 1.3 Aug 19, 2026, 6:09 AM Plugin metadata CVSS metrics ("CVSSv3 score" set to 9.8) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H") Detection (updated detection logic) Plugin Feed: 202608190609
Version 1.2 Aug 16, 2026, 2:04 PM CVSS metrics ("CVSSv2 score" set to 7.2) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C") CVSS metrics ("CVSSv3 score" set to 7.8) CVSS metrics ("CVSSv3 vector" set to "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H") Detection (updated detection logic) Plugin metadata Plugin Feed: 202608161404
Version 1.1 Aug 15, 2026, 10:21 PM New Plugin Feed: 202608152221