CVE-2026-53702

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.

Routine
CVSS
6.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0023
13th percentile

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

ProductFixed inFixReleased
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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