Amazon Linux 2 : gstreamer1-plugins-bad-free, --advisory ALAS2-2026-3895 (ALAS-2026-3895)

high Nessus Plugin ID 341856

Synopsis

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

Description

The version of gstreamer1-plugins-bad-free installed on the remote host is prior to 1.18.4-5. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3895 advisory.

A heap out-of-bounds write vulnerability was found in the GStreamer gst-plugins-bad adpcmdec element when decoding IMA/DVI ADPCM audio. Insufficient validation of the per-block sample count for multi-channel streams allows a crafted WAV file to cause writes beyond the allocated output buffer. This can lead to application crash, denial of service, memory corruption, or potentially arbitrary code execution when untrusted media is processed. (CVE-2026-19387)

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 gstreamer1-plugins-bad-free' or or 'yum update --advisory ALAS2-2026-3895' to update your system.

Plugin Details

Severity: High

ID: 341856

File Name: al2_ALAS-2026-3895.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 8/31/2026

Updated: 8/31/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.61

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-19387

CVSS v3

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/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:gstreamer1-plugins-bad-free-debuginfo, p-cpe:/a:amazon:linux:gstreamer1-plugins-bad-free-devel, p-cpe:/a:amazon:linux:gstreamer1-plugins-bad-free

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/31/2026

Vulnerability Publication Date: 8/10/2026

Reference Information

CVE: CVE-2026-19387

Detections

Analytics