Detections
Analytics

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-383526)

medium Nessus Plugin ID 267845

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-2025-383526 advisory.

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

 bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again

 Commit 028ddcac477b (bcache: Remove unnecessary NULL point check in node allocations) leads a NULL pointer deference in cache_set_flush().

 1721 if (!IS_ERR_OR_NULL(c->root)) 1722 list_add(&c->root->list, &c->btree_cache);

 >From the above code in cache_set_flush(), if previous registration code fails before allocating c->root, it is possible c->root is NULL as what it is initialized. __bch_btree_node_alloc() never returns NULL but c->root is possible to be NULL at above line 1721.

 This patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.

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?d1d0a4cc

http://www.nessus.org/u?7c5943c8

https://nvd.nist.gov/vuln/detail/CVE-2024-48881

Plugin Details

Severity: Medium

ID: 267845

File Name: unity_linux_UTSA-2025-383526.nasl

Version: 1.2

Type: local

Published: 10/7/2025

Updated: 10/15/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2024-48881

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: 7/8/2025

Vulnerability Publication Date: 12/12/2023

Reference Information

CVE: CVE-2024-48881