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Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987389)

medium Nessus Plugin ID 268006

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-2025-987389 advisory.

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

 xprtrdma: treat all calls not a bcall when bc_serv is NULL

 When a rdma server returns a fault format reply, nfs v3 client may treats it as a bcall when bc service is not exist.

 The debug message at rpcrdma_bc_receive_call are,

 [56579.837169] RPC: rpcrdma_bc_receive_call: callback XID 00000001, length=20 [56579.837174] RPC: rpcrdma_bc_receive_call: 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04

 After that, rpcrdma_bc_receive_call will meets NULL pointer as,

 [ 226.057890] BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8 ...
 [ 226.058704] RIP: 0010:_raw_spin_lock+0xc/0x20 ...
 [ 226.059732] Call Trace:
 [ 226.059878] rpcrdma_bc_receive_call+0x138/0x327 [rpcrdma] [ 226.060011] __ib_process_cq+0x89/0x170 [ib_core] [ 226.060092] ib_cq_poll_work+0x26/0x80 [ib_core] [ 226.060257] process_one_work+0x1a7/0x360 [ 226.060367] ? create_worker+0x1a0/0x1a0 [ 226.060440] worker_thread+0x30/0x390 [ 226.060500] ? create_worker+0x1a0/0x1a0 [ 226.060574] kthread+0x116/0x130 [ 226.060661] ? kthread_flush_work_fn+0x10/0x10 [ 226.060724] ret_from_fork+0x35/0x40 ...

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.

See Also

http://www.nessus.org/u?7f7fc37b

http://www.nessus.org/u?b593d94e

https://nvd.nist.gov/vuln/detail/CVE-2022-49321

Plugin Details

Severity: Medium

ID: 268006

File Name: unity_linux_UTSA-2025-987389.nasl

Version: 1.1

Type: local

Published: 10/7/2025

Updated: 10/7/2025

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-2022-49321

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: 7/15/2022

Reference Information

CVE: CVE-2022-49321