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Unity Linux 20.1070a Security Update: kernel (UTSA-2026-143052)

medium Nessus Plugin ID 370740

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-2026-143052 advisory.

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

 pinctrl: ocelot: fix system hang on level based interrupts

 The current implementation only calls chained_irq_enter() and chained_irq_exit() if it detects pending interrupts.

 ``` for (i = 0; i < info->stride; i++) { uregmap_read(info->map, id_reg + 4 * i, );
 if (!reg) continue;

 chained_irq_enter(parent_chip, desc);
 ```

 However, in case of GPIO pin configured in level mode and the parent controller configured in edge mode, GPIO interrupt might be lowered by the hardware. In the result, if the interrupt is short enough, the parent interrupt is still pending while the GPIO interrupt is cleared;
 chained_irq_enter() never gets called and the system hangs trying to service the parent interrupt.

 Moving chained_irq_enter() and chained_irq_exit() outside the for loop ensures that they are called even when GPIO interrupt is lowered by the hardware.

 The similar code with chained_irq_enter() / chained_irq_exit() functions wrapping interrupt checking loop may be found in many other drivers:
 ``` grep -r -A 10 chained_irq_enter drivers/pinctrl ```

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://nvd.nist.gov/vuln/detail/CVE-2024-50196

https://security-tracker.debian.org/tracker/CVE-2024-50196

http://www.nessus.org/u?44d5c6f1

http://www.nessus.org/u?4a6bbdba

http://www.nessus.org/u?4facab28

http://www.nessus.org/u?5e0da911

http://www.nessus.org/u?99b7e0c3

http://www.nessus.org/u?d44ce5f4

Plugin Details

Severity: Medium

ID: 370740

File Name: unity_linux_UTSA-2026-143052.nasl

Version: 1.1

Type: Local

Published: 10/22/2026

Updated: 10/22/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.48

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2024-50196

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/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/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/23/2026

Vulnerability Publication Date: 11/8/2024

Reference Information

CVE: CVE-2024-50196