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Unity Linux 20.1060a Security Update: kernel (UTSA-2026-003312)
high Nessus Plugin ID 287691
Synopsis
The Unity Linux host is missing one or more security updates.Description
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003312 advisory.An issue was discovered in the Linux kernel before 4.20. There is a race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c, leading to a use-after-free.
Tenable has extracted the preceding description block directly from the Unity Linux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected kernel package.See Also
http://www.nessus.org/u?c48ae752
http://www.nessus.org/u?2305893a
http://www.nessus.org/u?390095f8
http://www.securityfocus.com/bid/108196
http://www.nessus.org/u?a4db5548
http://www.nessus.org/u?53a9035e
https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
https://seclists.org/bugtraq/2019/Aug/13
https://seclists.org/bugtraq/2019/Aug/18
https://security-tracker.debian.org/tracker/CVE-2018-20836
https://security.netapp.com/advisory/ntap-20190719-0003/
https://support.f5.com/csp/article/K11225249
https://usn.ubuntu.com/4076-1/
Plugin Details
Severity: High
ID: 287691
File Name: unity_linux_UTSA-2026-003312.nasl
Version: 1.2
Type: local
Published: 1/15/2026
Updated: 1/16/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: High
Base Score: 9.3
Temporal Score: 6.9
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2018-20836
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.1
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 1/15/2026
Vulnerability Publication Date: 5/7/2019
Reference Information
CVE: CVE-2018-20836