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Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-010833)

medium Nessus Plugin ID 308906

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-2026-010833 advisory.

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

 bpf: Prevent decl_tag from being referenced in func_proto arg

 Syzkaller managed to hit another decl_tag issue:

 btf_func_proto_check kernel/bpf/btf.c:4506 [inline] btf_check_all_types kernel/bpf/btf.c:4734 [inline] btf_parse_type_sec+0x1175/0x1980 kernel/bpf/btf.c:4763 btf_parse kernel/bpf/btf.c:5042 [inline] btf_new_fd+0x65a/0xb00 kernel/bpf/btf.c:6709 bpf_btf_load+0x6f/0x90 kernel/bpf/syscall.c:4342
 __sys_bpf+0x50a/0x6c0 kernel/bpf/syscall.c:5034
 __do_sys_bpf kernel/bpf/syscall.c:5093 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5091 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5091 do_syscall_64+0x54/0x70 arch/x86/entry/common.c:48

 This seems similar to commit ea68376c8bed (bpf: prevent decl_tag from being referenced in func_proto) but for the argument.

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?f58575e3

http://www.nessus.org/u?c68c6cc9

https://nvd.nist.gov/vuln/detail/CVE-2022-50883

Plugin Details

Severity: Medium

ID: 308906

File Name: unity_linux_UTSA-2026-010833.nasl

Version: 1.1

Type: Local

Published: 4/21/2026

Updated: 4/21/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

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-2022-50883

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/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 4/20/2026

Vulnerability Publication Date: 7/21/2021

Reference Information

CVE: CVE-2022-50883