gst-plugins-bad1.0: A stack buffer overflow flaw was found in the GStreamer H.265 codec parser library (gst-plugins-bad)
CVE-2026-53702 is fixed in 19 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.
A stack buffer overflow flaw was found in the GStreamer H.265 codec parser library (gst-plugins-bad). When parsing a buffering period SEI message, the parser uses an incorrect loop bound derived from cpb_cnt_minus1[i] (the loop index) instead of the sub-layer 0 CPB count cpb_cnt_minus1[0] from the referenced Sequence Parameter Set. A crafted H.265 video file or stream can cause the parser to write beyond the bounds of stack-allocated CPB delay arrays, resulting in a crash or potential stack memory corruption.
Where it's fixed
| 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 | Jun 11, 2026 |
| 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 | Jun 11, 2026 |
| gst-plugins-bad1.0 · Debian 12.15 (bookworm) | 1.22.0-4+deb12u8 | DEBIAN-CVE-2026-53702 | Jun 24, 2026 |
| gst-plugins-bad1.0 · Debian 14 | 1.28.3-1 | DEBIAN-CVE-2026-53702 | Jun 24, 2026 |
| gstreamer-plugins-bad · opensuse-leap 16.0 | 1.26.7-160000.3.1 | OPENSUSE-SU-2026:21370-1 | Jul 18, 2026 |
| gstreamer-plugins-bad · sles 15.6 | 1.24.0-150600.4.9.1 | SUSE-SU-2026:3058-1 | Jul 15, 2026 |
| gstreamer-plugins-bad · sles 15.7 | 1.24.0-150600.4.9.1 | SUSE-SU-2026:3058-1 | Jul 15, 2026 |
| gstreamer-plugins-bad · sles 16.0 | 1.26.7-160000.3.1 | SUSE-SU-2026:22817-1 | Jul 18, 2026 |
| gstreamer1-plugin-openh264 · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugin-openh264-debuginfo · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugins-bad-free · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugins-bad-free-debuginfo · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugins-bad-free-debugsource · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugins-bad-free-devel · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugins-bad-free-libs · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1-plugins-bad-free-libs-debuginfo · amzn 2023 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 | Jul 6, 2026 |
| gstreamer1.0-opencv · Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | gstreamer1.0-opencv 1.28.2-1ubuntu1.1 | Jun 11, 2026 |
| gstreamer1.0-plugins-bad · Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | gstreamer1.0-plugins-bad 1.28.2-1ubuntu1.1 | Jun 11, 2026 |
| 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 | Jun 11, 2026 |
| gstreamer1.0-plugins-extra · Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | gstreamer1.0-plugins-extra 1.28.2-1ubuntu1.1 | Jun 11, 2026 |
| libgstreamer-opencv1.0-0 · Ubuntu 26.04.1 LTS (resolute) | 1.28.2-1ubuntu1.1 | libgstreamer-opencv1.0-0 1.28.2-1ubuntu1.1 | Jun 11, 2026 |
| 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 | Jun 11, 2026 |
| 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 | Jun 11, 2026 |
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