# CVE-2026-53701: gst-plugins-bad1.0: An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad

CVE-2026-53701 is fixed in 11 products on 1 platform, first by gir1.2-gst-plugins-bad-1.0 1.28.2-1ubuntu1.1, released June 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-53701
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 11, 2026

## Description

An out-of-bounds write vulnerability was found in GStreamer's H.266/VVC PPS picture partition parser in gst-plugins-bad. In the multi-slice-in-tile processing of gst_h266_parser_parse_picture_partition() (gsth266parser.c), the loop iterates without checking that the slice index stays within bounds, writing past three fixed-size arrays (slice_height_in_ctus, slice_top_left_ctu_x, slice_top_left_ctu_y) in the GstH266PPS structure. While the initial proof-of-concept demonstrated a 4-byte out-of-bounds write, the code permits larger writes across multiple iterations. A crafted H.266/VVC media file can trigger this vulnerability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gir1.2-gst-plugins-bad-1.0 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [gir1.2-gst-plugins-bad-1.0 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-gst-plugins-bad-1.0-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | gir1.2-gst-plugins-extra-1.0 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [gir1.2-gst-plugins-extra-1.0 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gir1.2-gst-plugins-extra-1.0-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | gst-plugins-bad1.0 Debian 13.5 (trixie) | 1.26.2-3+deb13u2 | [DEBIAN-CVE-2026-53701](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53701.md) | Jun 24, 2026 |
| Linux | gst-plugins-bad1.0 Debian 14 | 1.28.3-1 | [DEBIAN-CVE-2026-53701](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53701.md) | Jun 24, 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 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 | gstreamer1.0-opencv Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [gstreamer1.0-opencv 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-opencv-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | gstreamer1.0-plugins-bad Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [gstreamer1.0-plugins-bad 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-plugins-bad-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | gstreamer1.0-plugins-bad-apps Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [gstreamer1.0-plugins-bad-apps 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-plugins-bad-apps-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | gstreamer1.0-plugins-extra Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [gstreamer1.0-plugins-extra 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-gstreamer1.0-plugins-extra-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | libgstreamer-opencv1.0-0 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [libgstreamer-opencv1.0-0 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgstreamer-opencv1.0-0-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | libgstreamer-plugins-bad1.0-0 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [libgstreamer-plugins-bad1.0-0 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgstreamer-plugins-bad1.0-0-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |
| Linux | libgstreamer-plugins-extra1.0-0 Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | [libgstreamer-plugins-extra1.0-0 1.28.2-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libgstreamer-plugins-extra1.0-0-1.28.2-1ubuntu1.1.md) | Jun 11, 2026 |

---

Data as of 2026-11-08T00:53:09Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.