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Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102101)
high Nessus Plugin ID 338517
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-2026-102101 advisory.In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Use krealloc_array() in dal_vector_reserve()
[Why & How] dal_vector_reserve() computes the allocation size as capacity * vector->struct_size using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends.
Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue.
(cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)
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
https://nvd.nist.gov/vuln/detail/CVE-2026-53329
Plugin Details
Severity: High
ID: 338517
File Name: unity_linux_UTSA-2026-102101.nasl
Version: 1.2
Type: Local
Published: 8/21/2026
Updated: 8/21/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.14
CVSS v2
Risk Factor: Medium
Base Score: 6
Temporal Score: 4.4
Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-53329
CVSS v3
Risk Factor: High
Base Score: 7
Temporal Score: 6.1
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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: 8/17/2026
Vulnerability Publication Date: 7/1/2026
Reference Information
CVE: CVE-2026-53329