# CVE-2026-18649: gst-plugins-good1.0: A flaw was found in the GStreamer gst-plugins-good package

CVE-2026-18649 is fixed in 12 products on 1 platform, first by gstreamer1.0-gtk3 1.14.5-0ubuntu1~18.04.3+esm2, released August 6, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-18649
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0096
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 6, 2026

## Description

A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gst-plugins-good1.0 Debian 14 | 1.28.6-1 | [DEBIAN-CVE-2026-18649](https://patchblox.com/security/data/fix/linux/debian-cve-2026-18649.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good RHEL 10 | 1.24.11-1.el10_0.4 | [RHSA-2026:65959](https://patchblox.com/security/data/fix/linux/rhsa-2026-65959.md) | Aug 13, 2026 |
| Linux | gstreamer1-plugins-good RHEL 8 | 0:1.16.1-7.el8_10.3 | [RHSA-2026:56966](https://patchblox.com/security/data/fix/linux/rhsa-2026-56966.md) | Aug 20, 2026 |
| Linux | gstreamer1-plugins-good RHEL 9 | 0:1.22.12-7.el9_8.2 | [RHSA-2026:53452](https://patchblox.com/security/data/fix/linux/rhsa-2026-53452.md) | Aug 13, 2026 |
| Linux | gstreamer1-plugins-good almalinux 10 | 1.26.7-2.el10_2.3 | [ALSA-2026:53451](https://patchblox.com/security/data/fix/linux/alsa-2026-53451.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good almalinux 8 | 1.16.1-7.el8_10.3 | [ALSA-2026:56966](https://patchblox.com/security/data/fix/linux/alsa-2026-56966.md) | Aug 19, 2026 |
| Linux | gstreamer1-plugins-good almalinux 9 | 1.22.12-7.el9_8.2 | [ALSA-2026:53452](https://patchblox.com/security/data/fix/linux/alsa-2026-53452.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-2121](https://patchblox.com/security/data/fix/linux/alas2023-2026-2121.md) | Aug 31, 2026 |
| Linux | gstreamer1-plugins-good ol 10 | 0:1.26.7-2.el10_2.3 | [ELSA-2026-53451](https://patchblox.com/security/data/fix/linux/elsa-2026-53451.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good ol 8 | 0:1.16.1-7.el8_10.3 | [ELSA-2026-56966](https://patchblox.com/security/data/fix/linux/elsa-2026-56966.md) | Aug 19, 2026 |
| Linux | gstreamer1-plugins-good ol 9 | 0:1.22.12-7.el9_8.2 | [ELSA-2026-53452](https://patchblox.com/security/data/fix/linux/elsa-2026-53452.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good rocky 10 | 0:1.26.7-2.el10_2.3 | [RLSA-2026:53451](https://patchblox.com/security/data/fix/linux/rlsa-2026-53451.md) | Aug 12, 2026 |
| Linux | gstreamer1-plugins-good rocky 8 | 0:1.16.1-7.el8_10.3 | [RLSA-2026:56966](https://patchblox.com/security/data/fix/linux/rlsa-2026-56966.md) | Aug 20, 2026 |
| Linux | gstreamer1-plugins-good rocky 9 | 0:1.22.12-7.el9_8.2 | [RLSA-2026:53452](https://patchblox.com/security/data/fix/linux/rlsa-2026-53452.md) | Aug 12, 2026 |
| Linux | gstreamer1-plugins-good-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-2121](https://patchblox.com/security/data/fix/linux/alas2023-2026-2121.md) | Aug 31, 2026 |
| Linux | gstreamer1-plugins-good-debugsource amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-2121](https://patchblox.com/security/data/fix/linux/alas2023-2026-2121.md) | Aug 31, 2026 |
| Linux | gstreamer1-plugins-good-gtk RHEL 8 | 0:1.16.1-7.el8_10.3 | [RHSA-2026:56966](https://patchblox.com/security/data/fix/linux/rhsa-2026-56966.md) | Aug 20, 2026 |
| Linux | gstreamer1-plugins-good-gtk RHEL 9 | 0:1.22.12-7.el9_8.2 | [RHSA-2026:53452](https://patchblox.com/security/data/fix/linux/rhsa-2026-53452.md) | Aug 13, 2026 |
| Linux | gstreamer1-plugins-good-gtk almalinux 10 | 1.26.7-2.el10_2.3 | [ALSA-2026:53451](https://patchblox.com/security/data/fix/linux/alsa-2026-53451.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good-gtk almalinux 8 | 1.16.1-7.el8_10.3 | [ALSA-2026:56966](https://patchblox.com/security/data/fix/linux/alsa-2026-56966.md) | Aug 19, 2026 |
| Linux | gstreamer1-plugins-good-gtk almalinux 9 | 1.22.12-7.el9_8.2 | [ALSA-2026:53452](https://patchblox.com/security/data/fix/linux/alsa-2026-53452.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good-gtk amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-2121](https://patchblox.com/security/data/fix/linux/alas2023-2026-2121.md) | Aug 31, 2026 |
| Linux | gstreamer1-plugins-good-gtk ol 10 | 0:1.26.7-2.el10_2.3 | [ELSA-2026-53451](https://patchblox.com/security/data/fix/linux/elsa-2026-53451.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good-gtk ol 8 | 0:1.16.1-7.el8_10.3 | [ELSA-2026-56966](https://patchblox.com/security/data/fix/linux/elsa-2026-56966.md) | Aug 19, 2026 |
| Linux | gstreamer1-plugins-good-gtk ol 9 | 0:1.22.12-7.el9_8.2 | [ELSA-2026-53452](https://patchblox.com/security/data/fix/linux/elsa-2026-53452.md) | Aug 11, 2026 |
| Linux | gstreamer1-plugins-good-gtk-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-2121](https://patchblox.com/security/data/fix/linux/alas2023-2026-2121.md) | Aug 31, 2026 |
| Linux | gstreamer1.0-gtk3 Ubuntu 18.04.6 LTS (bionic) | 1.14.5-0ubuntu1~18.04.3+esm2 | [gstreamer1.0-gtk3 1.14.5-0ubuntu1~18.04.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gstreamer1.0-gtk3-1.14.5-0ubuntu1-18.04.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-gtk3 Ubuntu 20.04 LTS (focal) | 1.16.3-0ubuntu1.3+esm2 | [gstreamer1.0-gtk3 1.16.3-0ubuntu1.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gstreamer1.0-gtk3-1.16.3-0ubuntu1.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-gtk3 Ubuntu 22.04.1 LTS (jammy) | 1.20.3-0ubuntu1.8 | [gstreamer1.0-gtk3 1.20.3-0ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gstreamer1.0-gtk3-1.20.3-0ubuntu1.8.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-gtk3 Ubuntu 24.04.5 LTS (noble) | 1.24.2-1ubuntu1.6 | [gstreamer1.0-gtk3 1.24.2-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gstreamer1.0-gtk3-1.24.2-1ubuntu1.6.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-gtk3 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-2ubuntu0.2 | [gstreamer1.0-gtk3 1.28.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-gtk3-1.28.2-2ubuntu0.2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-plugins-good Ubuntu 18.04.6 LTS (bionic) | 1.14.5-0ubuntu1~18.04.3+esm2 | [gstreamer1.0-plugins-good 1.14.5-0ubuntu1~18.04.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gstreamer1.0-plugins-good-1.14.5-0ubuntu1-18.04.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-plugins-good Ubuntu 20.04 LTS (focal) | 1.16.3-0ubuntu1.3+esm2 | [gstreamer1.0-plugins-good 1.16.3-0ubuntu1.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gstreamer1.0-plugins-good-1.16.3-0ubuntu1.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-plugins-good Ubuntu 22.04.1 LTS (jammy) | 1.20.3-0ubuntu1.8 | [gstreamer1.0-plugins-good 1.20.3-0ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gstreamer1.0-plugins-good-1.20.3-0ubuntu1.8.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-plugins-good Ubuntu 24.04.5 LTS (noble) | 1.24.2-1ubuntu1.6 | [gstreamer1.0-plugins-good 1.24.2-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gstreamer1.0-plugins-good-1.24.2-1ubuntu1.6.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-plugins-good Ubuntu 26.04.1 LTS (resolute) | 1.28.2-2ubuntu0.2 | [gstreamer1.0-plugins-good 1.28.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-plugins-good-1.28.2-2ubuntu0.2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-pulseaudio Ubuntu 18.04.6 LTS (bionic) | 1.14.5-0ubuntu1~18.04.3+esm2 | [gstreamer1.0-pulseaudio 1.14.5-0ubuntu1~18.04.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gstreamer1.0-pulseaudio-1.14.5-0ubuntu1-18.04.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-pulseaudio Ubuntu 20.04 LTS (focal) | 1.16.3-0ubuntu1.3+esm2 | [gstreamer1.0-pulseaudio 1.16.3-0ubuntu1.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gstreamer1.0-pulseaudio-1.16.3-0ubuntu1.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-pulseaudio Ubuntu 22.04.1 LTS (jammy) | 1.20.3-0ubuntu1.8 | [gstreamer1.0-pulseaudio 1.20.3-0ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gstreamer1.0-pulseaudio-1.20.3-0ubuntu1.8.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-pulseaudio Ubuntu 24.04.5 LTS (noble) | 1.24.2-1ubuntu1.6 | [gstreamer1.0-pulseaudio 1.24.2-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gstreamer1.0-pulseaudio-1.24.2-1ubuntu1.6.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-pulseaudio Ubuntu 26.04.1 LTS (resolute) | 1.28.2-2ubuntu0.2 | [gstreamer1.0-pulseaudio 1.28.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-pulseaudio-1.28.2-2ubuntu0.2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt5 Ubuntu 18.04.6 LTS (bionic) | 1.14.5-0ubuntu1~18.04.3+esm2 | [gstreamer1.0-qt5 1.14.5-0ubuntu1~18.04.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gstreamer1.0-qt5-1.14.5-0ubuntu1-18.04.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt5 Ubuntu 20.04 LTS (focal) | 1.16.3-0ubuntu1.3+esm2 | [gstreamer1.0-qt5 1.16.3-0ubuntu1.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gstreamer1.0-qt5-1.16.3-0ubuntu1.3-esm2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt5 Ubuntu 22.04.1 LTS (jammy) | 1.20.3-0ubuntu1.8 | [gstreamer1.0-qt5 1.20.3-0ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gstreamer1.0-qt5-1.20.3-0ubuntu1.8.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt5 Ubuntu 24.04.5 LTS (noble) | 1.24.2-1ubuntu1.6 | [gstreamer1.0-qt5 1.24.2-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gstreamer1.0-qt5-1.24.2-1ubuntu1.6.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt5 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-2ubuntu0.2 | [gstreamer1.0-qt5 1.28.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-qt5-1.28.2-2ubuntu0.2.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt6 Ubuntu 24.04.5 LTS (noble) | 1.24.2-1ubuntu1.6 | [gstreamer1.0-qt6 1.24.2-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-gstreamer1.0-qt6-1.24.2-1ubuntu1.6.md) | Aug 6, 2026 |
| Linux | gstreamer1.0-qt6 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-2ubuntu0.2 | [gstreamer1.0-qt6 1.28.2-2ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-qt6-1.28.2-2ubuntu0.2.md) | Aug 6, 2026 |
| Linux | libgstreamer-plugins-good1.0-0 Ubuntu 18.04.6 LTS (bionic) | 1.14.5-0ubuntu1~18.04.3+esm2 | [libgstreamer-plugins-good1.0-0 1.14.5-0ubuntu1~18.04.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libgstreamer-plugins-good1.0-0-1.14.5-0ubuntu1-18.04.3-esm2.md) | Aug 6, 2026 |
| Linux | libgstreamer-plugins-good1.0-0 Ubuntu 20.04 LTS (focal) | 1.16.3-0ubuntu1.3+esm2 | [libgstreamer-plugins-good1.0-0 1.16.3-0ubuntu1.3+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libgstreamer-plugins-good1.0-0-1.16.3-0ubuntu1.3-esm2.md) | Aug 6, 2026 |
| Linux | libgstreamer-plugins-good1.0-0 Ubuntu 22.04.1 LTS (jammy) | 1.20.3-0ubuntu1.8 | [libgstreamer-plugins-good1.0-0 1.20.3-0ubuntu1.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libgstreamer-plugins-good1.0-0-1.20.3-0ubuntu1.8.md) | Aug 6, 2026 |
| Linux | libgstreamer-plugins-good1.0-0 Ubuntu 24.04.5 LTS (noble) | 1.24.2-1ubuntu1.6 | [libgstreamer-plugins-good1.0-0 1.24.2-1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libgstreamer-plugins-good1.0-0-1.24.2-1ubuntu1.6.md) | Aug 6, 2026 |

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