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

  - nbd: defer config unlock in nbd_genl_connect There is one use-after-free warning when running     NBD_CMD_CONNECT and NBD_CLEAR_SOCK: nbd_genl_connect nbd_alloc_and_init_config // config_refs=1     nbd_start_device // config_refs=2 set NBD_RT_HAS_CONFIG_REF open nbd // config_refs=3 recv_work done //     config_refs=2 NBD_CLEAR_SOCK // config_refs=1 close nbd // config_refs=0 refcount_inc -> uaf ------------[     cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 24 PID: 1014 at     lib/refcount.c:25 refcount_warn_saturate+0x12e/0x290 nbd_genl_connect+0x16d0/0x1ab0     genl_family_rcv_msg_doit+0x1f3/0x310 genl_rcv_msg+0x44a/0x790 The issue can be easily reproduced by adding     a small delay before refcount_inc(&nbd->config_refs) in nbd_genl_connect():
    mutex_unlock(&nbd->config_lock); if (!ret) { set_bit(NBD_RT_HAS_CONFIG_REF, &config->runtime_flags); +     printk(before sleep\n); + mdelay(5 * 1000); + printk(after sleep\n); refcount_inc(&nbd->config_refs);
    nbd_connect_reply(info, nbd->index); } (CVE-2025-68366)

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

Detections

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Linux Distros Unpatched Vulnerability : CVE-2025-68366

high Nessus Plugin ID 279739

Version 1.6

Version 1.5

Version 1.4

Version 1.3

Version 1.2

Version 1.1

Version 1.6 Jan 13, 2026, 2:35 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202601130235
Version 1.5 Jan 10, 2026, 7:58 PM Detection (updated detection logic) Plugin Feed: 202601101958
Version 1.4 Dec 28, 2025, 11:53 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202512281153
Version 1.3 Dec 26, 2025, 4:55 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202512261655
Version 1.2 Dec 26, 2025, 12:07 AM CVSS metrics ("CVSSv2 score" set to 6.1) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:P/I:P/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") CVSSv2 severity (based on CVE-2025-68366, severity decreased from "High" to "Medium") Detection (updated detection logic) Plugin metadata Plugin Feed: 202512260007
Version 1.1 Dec 25, 2025, 7:38 AM New Plugin Feed: 202512250738