Detections
Analytics

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986352)

medium Nessus Plugin ID 268585

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-2025-986352 advisory.

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

 net/rds: fix possible cp null dereference

 cp might be null, calling cp->cp_conn would produce null dereference

 [Simon Horman adds:]

 Analysis:

 * cp is a parameter of __rds_rdma_map and is not reassigned.

 * The following call-sites pass a NULL cp argument to __rds_rdma_map()

 - rds_get_mr()
 - rds_get_mr_for_dest

 * Prior to the code above, the following assumes that cp may be NULL (which is indicative, but could itself be unnecessary)

 trans_private = rs->rs_transport->get_mr( sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL, args->vec.addr, args->vec.bytes, need_odp ? ODP_ZEROBASED : ODP_NOT_NEEDED);

 * The code modified by this patch is guarded by IS_ERR(trans_private), where trans_private is assigned as per the previous point in this analysis.

 The only implementation of get_mr that I could locate is rds_ib_get_mr() which can return an ERR_PTR if the conn (4th) argument is NULL.

 * ret is set to PTR_ERR(trans_private).
 rds_ib_get_mr can return ERR_PTR(-ENODEV) if the conn (4th) argument is NULL.
 Thus ret may be -ENODEV in which case the code in question will execute.

 Conclusion:
 * cp may be NULL at the point where this patch adds a check;
 this patch does seem to address a possible bug

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?ca07e31f

http://www.nessus.org/u?a481434b

https://nvd.nist.gov/vuln/detail/CVE-2024-35902

Plugin Details

Severity: Medium

ID: 268585

File Name: unity_linux_UTSA-2025-986352.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-2024-35902

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: 9/22/2025

Vulnerability Publication Date: 4/9/2024

Reference Information

CVE: CVE-2024-35902