RHSA-2026:73424 - Security Advisory

Topic

An update for gstreamer1-plugins-good is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

GStreamer is a streaming media framework based on graphs of filters which operate on media data. The gstreamer1-plugins-good packages contain a collection of well-supported plug-ins of good quality and under the LGPL license.

Security Fix(es):

• gstreamer: GStreamer: Remote Code Execution via MRF file parsing heap-based buffer overflow (CVE-2026-18296)
• gstreamer: GStreamer: Remote code execution via heap-based buffer overflow in PNG file parsing (CVE-2026-18298)
• gstreamer: GStreamer: Remote Code Execution via Use-After-Free in rtpsbcdepay (CVE-2026-18299)
• GStreamer: GStreamer: Remote code execution via MRF file parsing (CVE-2026-18295)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle Long Life 8.4 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle Long Life 8.4 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle Long Life 8.4 s390x

Fixes

• BZ - 2520580 - CVE-2026-18296 gstreamer-plugins-good: GStreamer: Remote Code Execution via MRF file parsing heap-based buffer overflow
• BZ - 2520590 - CVE-2026-18298 gstreamer-plugins-good: GStreamer: Remote code execution via heap-based buffer overflow in PNG file parsing
• BZ - 2520605 - CVE-2026-18299 gstreamer-plugins-good: GStreamer: Remote Code Execution via Use-After-Free in rtpsbcdepay
• BZ - 2520606 - CVE-2026-18295 gstreamer-plugins-good: GStreamer: Remote code execution via MRF file parsing

CVEs

• CVE-2026-18295
• CVE-2026-18296
• CVE-2026-18298
• CVE-2026-18299

References

• https://access.redhat.com/security/updates/classification/#important