Amazon Linux 2 : freeipmi (ALAS-2026-3954)

critical Nessus Plugin ID 351013

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of freeipmi installed on the remote host is prior to 1.5.7-3. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3954 advisory.

FreeIPMI before 1.6.19 has a stack-based buffer overflow in _ipmi_sel_oem_fujitsu_get_sel_entry_long_text in libfreeipmi/sel/ipmi-sel-string-fujitsu-irmc-common.c via malformed Fujitsu SEL long-text responses.
(CVE-2026-85504)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update freeipmi' or or 'yum update --advisory ALAS2-2026-3954' to update your system.

Plugin Details

Severity: Critical

ID: 351013

File Name: al2_ALAS-2026-3954.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 9/29/2026

Updated: 9/29/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.29

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-85504

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:freeipmi-bmc-watchdog, p-cpe:/a:amazon:linux:freeipmi-debuginfo, p-cpe:/a:amazon:linux:freeipmi-devel, p-cpe:/a:amazon:linux:freeipmi-ipmidetectd, p-cpe:/a:amazon:linux:freeipmi-ipmiseld, p-cpe:/a:amazon:linux:freeipmi

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 9/4/2026

Reference Information

CVE: CVE-2026-85504

IAVB: 2026-B-0251

Detections

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