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Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986884)

medium Nessus Plugin ID 268807

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-2025-986884 advisory.

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

 watch_queue: Free the page array when watch_queue is dismantled

 Commit 7ea1a0124b6d (watch_queue: Free the alloc bitmap when the watch_queue is torn down) took care of the bitmap, but not the page array.

 BUG: memory leak unreferenced object 0xffff88810d9bc140 (size 32):
 comm syz-executor335, pid 3603, jiffies 4294946994 (age 12.840s) hex dump (first 32 bytes):
 40 a7 40 04 00 ea ff ff 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:
 kmalloc_array include/linux/slab.h:621 [inline] kcalloc include/linux/slab.h:652 [inline] watch_queue_set_size+0x12f/0x2e0 kernel/watch_queue.c:251 pipe_ioctl+0x82/0x140 fs/pipe.c:632 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline]

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?09eb898b

http://www.nessus.org/u?76575e5f

https://nvd.nist.gov/vuln/detail/CVE-2022-49148

Plugin Details

Severity: Medium

ID: 268807

File Name: unity_linux_UTSA-2025-986884.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-2022-49148

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: 9/23/2025

Vulnerability Publication Date: 7/19/2023

Reference Information

CVE: CVE-2022-49148