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Unity Linux 20.1070e Security Update: kernel (UTSA-2026-131725)

high Nessus Plugin ID 366587

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-2026-131725 advisory.

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

 KVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails

 Nullify irqfd->producer if updating the IRTE for bypass fails, as leaving a dangling pointer will result in a use-after-free if the irqfd is reachable through KVM's routing, but the producer is freed separately. E.g. for VFIO PCI, the producer is embedded in struct vfio_pci_irq_ctx and freed when the vector is disabled, which can happen independent of routing updates.

 [sean: drop PPC change, massage changelog]

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

https://atomgit.com/src-openeuler/kernel/issues/17778

https://nvd.nist.gov/vuln/detail/CVE-2026-72283

http://www.nessus.org/u?67314340

http://www.nessus.org/u?84015e89

Plugin Details

Severity: High

ID: 366587

File Name: unity_linux_UTSA-2026-131725.nasl

Version: 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.76

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-72283

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/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/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/16/2026

Vulnerability Publication Date: 8/15/2026

Reference Information

CVE: CVE-2026-72283