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AlmaLinux 8 : gstreamer1-plugins-good (ALSA-2026:56966)

medium Nessus Plugin ID 338319

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Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:56966 advisory.

 * gst-plugins-good: gst-plugins-good: unbounded memory growth in rtph264depay and rtph265depay RTP depayloaders (CVE-2026-18649)
 * gstreamer1-plugins-good: gstreamer: unsigned integer underflow in avidemux FUJIFILM strd parsing leading to out-of-bounds read/write (CVE-2026-73433)
 * gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux vprp video field descriptor parsing (CVE-2026-73434)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected gstreamer1-plugins-good and / or gstreamer1-plugins-good-gtk packages.

See Also

https://access.redhat.com/errata/RHSA-2026:56966

https://errata.almalinux.org/8/ALSA-2026-56966.html

Plugin Details

Severity: Medium

ID: 338319

File Name: alma_linux_ALSA-2026-56966.nasl

Version: 1.1

Type: Local

Published: 8/20/2026

Updated: 8/20/2026

Supported Sensors: Nessus Agent, Continuous Assessment, 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: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-73434

CVSS v3

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.9

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

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

CVSS Score Source: CVE-2026-73433

Vulnerability Information

CPE: cpe:/o:alma:linux:8, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::resilientstorage, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::supplementary, p-cpe:/a:alma:linux:gstreamer1-plugins-good-gtk, p-cpe:/a:alma:linux:gstreamer1-plugins-good

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/19/2026

Vulnerability Publication Date: 8/6/2026

Reference Information

CVE: CVE-2026-18649, CVE-2026-73433, CVE-2026-73434

CWE: 125, 191, 770

RHSA: 2026:56966