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Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992570)

medium Nessus Plugin ID 280363

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-2025-992570 advisory.

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

 wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected

 When we are not connected to a channel, sending channel switch announcement doesn't make any sense.

 The BSS list is empty in that case. This causes the for loop in cfg80211_get_bss() to be bypassed, so the function returns NULL (check line 1424 of net/wireless/scan.c), causing the WARN_ON() in ieee80211_ibss_csa_beacon() to get triggered (check line 500 of net/mac80211/ibss.c), which was consequently reported on the syzkaller dashboard.

 Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().

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?35f9628d

http://www.nessus.org/u?c3c43478

https://nvd.nist.gov/vuln/detail/CVE-2022-49942

Plugin Details

Severity: Medium

ID: 280363

File Name: unity_linux_UTSA-2025-992570.nasl

Version: 1.1

Type: local

Published: 12/30/2025

Updated: 12/30/2025

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-2022-49942

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/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: 6/18/2025

Reference Information

CVE: CVE-2022-49942