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Unity Linux 20.1050e Security Update: kernel (UTSA-2026-004958)

medium Nessus Plugin ID 296638

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-2026-004958 advisory.

 In the Linux kernel, the following vulnerability has been resolved:

 drm/sched: Increment job count before swapping tail spsc queue

 A small race exists between spsc_queue_push and the run-job worker, in which spsc_queue_push may return not-first while the run-job worker has already idled due to the job count being zero. If this race occurs, job scheduling stops, leading to hangs while waiting on the jobs DMA fences.

 Seal this race by incrementing the job count before appending to the SPSC queue.

 This race was observed on a drm-tip 6.16-rc1 build with the Xe driver in an SVM test case.

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?afb57b8a

http://www.nessus.org/u?d7adbbf1

https://nvd.nist.gov/vuln/detail/CVE-2025-38515

Plugin Details

Severity: Medium

ID: 296638

File Name: unity_linux_UTSA-2026-004958.nasl

Version: 1.1

Type: local

Published: 1/26/2026

Updated: 1/26/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2025-38515

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/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: 1/26/2026

Vulnerability Publication Date: 8/5/2025

Reference Information

CVE: CVE-2025-38515