# CVE-2026-12892: gst-plugins-bad1.0: A flaw was found in GStreamer's gst-plugins-bad package

CVE-2026-12892 is fixed in 10 products on 1 platform, first by SUSE-SU-2026:3058-1, released July 15, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-12892
- Priority: Routine
- CVSS: 4.4 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 23, 2026

## Description

A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gst-plugins-bad1.0 Debian 12.15 (bookworm) | 1.22.0-4+deb12u8 | [DEBIAN-CVE-2026-12892](https://patchblox.com/security/data/fix/linux/debian-cve-2026-12892.md) | Jul 22, 2026 |
| Linux | gst-plugins-bad1.0 Debian 13.5 (trixie) | 1.26.2-3+deb13u3 | [DEBIAN-CVE-2026-12892](https://patchblox.com/security/data/fix/linux/debian-cve-2026-12892.md) | Jul 22, 2026 |
| Linux | gst-plugins-bad1.0 Debian 14 | 1.28.5-1 | [DEBIAN-CVE-2026-12892](https://patchblox.com/security/data/fix/linux/debian-cve-2026-12892.md) | Jul 22, 2026 |
| Linux | gstreamer-plugins-bad opensuse-leap 16.0 | 1.26.7-160000.3.1 | [OPENSUSE-SU-2026:21370-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21370-1.md) | Jul 18, 2026 |
| Linux | gstreamer-plugins-bad sles 15.6 | 1.24.0-150600.4.9.1 | [SUSE-SU-2026:3058-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3058-1.md) | Jul 15, 2026 |
| Linux | gstreamer-plugins-bad sles 15.7 | 1.24.0-150600.4.9.1 | [SUSE-SU-2026:3058-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3058-1.md) | Jul 15, 2026 |
| Linux | gstreamer-plugins-bad sles 16.0 | 1.26.7-160000.3.1 | [SUSE-SU-2026:22817-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22817-1.md) | Jul 18, 2026 |
| Linux | gstreamer1-plugin-openh264 amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugin-openh264-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugins-bad-free amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugins-bad-free-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugins-bad-free-debugsource amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugins-bad-free-devel amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugins-bad-free-libs amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |
| Linux | gstreamer1-plugins-bad-free-libs-debuginfo amzn 2023 | 1.24.10-1.amzn2023.0.8 | [ALAS2023-2026-1994](https://patchblox.com/security/data/fix/linux/alas2023-2026-1994.md) | Aug 3, 2026 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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