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Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987677)

medium Nessus Plugin ID 271007

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-2025-987677 advisory.

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

 mmc: sdio: fix possible resource leaks in some error paths

 If sdio_add_func() or sdio_init_func() fails, sdio_remove_func() can not release the resources, because the sdio function is not presented in these two cases, it won't call of_node_put() or put_device().

 To fix these leaks, make sdio_func_present() only control whether device_del() needs to be called or not, then always call of_node_put() and put_device().

 In error case in sdio_init_func(), the reference of 'card->dev' is not get, to avoid redundant put in sdio_free_func_cis(), move the get_device() to sdio_alloc_func() and put_device() to sdio_release_func(), it can keep the get/put function be balanced.

 Without this patch, while doing fault inject test, it can get the following leak reports, after this fix, the leak is gone.

 unreferenced object 0xffff888112514000 (size 2048):
 comm kworker/3:2, pid 65, jiffies 4294741614 (age 124.774s) hex dump (first 32 bytes):
 00 e0 6f 12 81 88 ff ff 60 58 8d 06 81 88 ff ff ..o.....`X......
 10 40 51 12 81 88 ff ff 10 40 51 12 81 88 ff ff .@Q......@Q.....
 backtrace:
 [<000000009e5931da>] kmalloc_trace+0x21/0x110 [<000000002f839ccb>] mmc_alloc_card+0x38/0xb0 [mmc_core] [<0000000004adcbf6>] mmc_sdio_init_card+0xde/0x170 [mmc_core] [<000000007538fea0>] mmc_attach_sdio+0xcb/0x1b0 [mmc_core] [<00000000d4fdeba7>] mmc_rescan+0x54a/0x640 [mmc_core]

 unreferenced object 0xffff888112511000 (size 2048):
 comm kworker/3:2, pid 65, jiffies 4294741623 (age 124.766s) hex dump (first 32 bytes):
 00 40 51 12 81 88 ff ff e0 58 8d 06 81 88 ff ff [email protected]......
 10 10 51 12 81 88 ff ff 10 10 51 12 81 88 ff ff ..Q.......Q.....
 backtrace:
 [<000000009e5931da>] kmalloc_trace+0x21/0x110 [<00000000fcbe706c>] sdio_alloc_func+0x35/0x100 [mmc_core] [<00000000c68f4b50>] mmc_attach_sdio.cold.18+0xb1/0x395 [mmc_core] [<00000000d4fdeba7>] mmc_rescan+0x54a/0x640 [mmc_core]

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?a2950fb2

http://www.nessus.org/u?a184b6c3

https://nvd.nist.gov/vuln/detail/CVE-2023-52730

Plugin Details

Severity: Medium

ID: 271007

File Name: unity_linux_UTSA-2025-987677.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-2023-52730

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: 9/4/2021

Reference Information

CVE: CVE-2023-52730