Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992461)

high Nessus Plugin ID 280254

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-2025-992461 advisory.

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

cpufreq: qcom: fix writes in read-only memory region

This commit fixes a kernel oops because of a write in some read-only memory:

[ 9.068287] Unable to handle kernel write to read-only memory at virtual address ffff800009240ad8 ..snip..
[ 9.138790] Internal error: Oops: 9600004f [#1] PREEMPT SMP ..snip..
[ 9.269161] Call trace:
[ 9.276271] __memcpy+0x5c/0x230 [ 9.278531] snprintf+0x58/0x80 [ 9.282002] qcom_cpufreq_msm8939_name_version+0xb4/0x190 [ 9.284869] qcom_cpufreq_probe+0xc8/0x39c ..snip..

The following line defines a pointer that point to a char buffer stored in read-only memory:

char *pvs_name = speedXX-pvsXX-vXX;

This pointer is meant to hold a template speedXX-pvsXX-vXX where the XX values get overridden by the qcom_cpufreq_krait_name_version function. Since the template is actually stored in read-only memory, when the function executes the following call we get an oops:

snprintf(*pvs_name, sizeof(speedXX-pvsXX-vXX), speed%d-pvs%d-v%d, speed, pvs, pvs_ver);

To fix this issue, we instead store the template name onto the stack by using the following syntax:

char pvs_name_buffer[] = speedXX-pvsXX-vXX;

Because the `pvs_name` needs to be able to be assigned to NULL, the template buffer is stored in the pvs_name_buffer and not under the pvs_name variable.

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.

Plugin Details

Severity: High

ID: 280254

File Name: unity_linux_UTSA-2025-992461.nasl

Version: 1.1

Type: local

Family: Unity Linux Local Security Checks

Published: 12/30/2025

Updated: 12/30/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

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

CVSS Score Source: CVE-2022-50239

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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: 12/30/2025

Vulnerability Publication Date: 9/4/2021

Reference Information

CVE: CVE-2022-50239

Detections

Analytics