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Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987648)

medium Nessus Plugin ID 270949

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-2025-987648 advisory.

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

 jffs2: fix memory leak in jffs2_do_mount_fs

 If jffs2_build_filesystem() in jffs2_do_mount_fs() returns an error, we can observe the following kmemleak report:

 -------------------------------------------- unreferenced object 0xffff88811b25a640 (size 64):
 comm mount, pid 691, jiffies 4294957728 (age 71.952s) hex dump (first 32 bytes):
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
 backtrace:
 [<ffffffffa493be24>] kmem_cache_alloc_trace+0x584/0x880 [<ffffffffa5423a06>] jffs2_sum_init+0x86/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...] unreferenced object 0xffff88812c760000 (size 65536):
 comm mount, pid 691, jiffies 4294957728 (age 71.952s) hex dump (first 32 bytes):
 bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
 bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb ................
 backtrace:
 [<ffffffffa493a449>] __kmalloc+0x6b9/0x910 [<ffffffffa5423a57>] jffs2_sum_init+0xd7/0x130 [<ffffffffa5400e58>] jffs2_do_mount_fs+0x798/0xac0 [<ffffffffa540acf3>] jffs2_do_fill_super+0x383/0xc30 [<ffffffffa540c00a>] jffs2_fill_super+0x2ea/0x4c0 [...]
 --------------------------------------------

 This is because the resources allocated in jffs2_sum_init() are not released. Call jffs2_sum_exit() to release these resources to solve the problem.

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?6ba7446d

http://www.nessus.org/u?225f2e13

https://nvd.nist.gov/vuln/detail/CVE-2022-49277

Plugin Details

Severity: Medium

ID: 270949

File Name: unity_linux_UTSA-2025-987648.nasl

Version: 1.1

Type: local

Published: 10/21/2025

Updated: 10/21/2025

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-2022-49277

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: 10/15/2025

Vulnerability Publication Date: 2/26/2025

Reference Information

CVE: CVE-2022-49277