Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gst-plugins-bad1.0 | 1.28.3-1 | — |
| Debian 13 | gst-plugins-bad1.0 | No fix yet | — |
| Debian 12 | gst-plugins-bad1.0 | 1.22.0-4+deb12u8 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | gst-plugins-bad1.0 | 1.28.2-1ubuntu1.1 | USN-8446-1 |
| Ubuntu 25.10 | gst-plugins-bad1.0 | No fix yet | — |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
| Ubuntu Pro 22.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | gstreamer-plugins-bad | 1.24.0-150600.4.9.1 | SUSE-SU-2026:3058-1 |
| SLES 15 SP6 | gstreamer-plugins-bad | 1.24.0-150600.4.9.1 | SUSE-SU-2026:3058-1 |
| SLES 15 SP5 | gstreamer-plugins-bad | 1.22.0-150500.3.34.1 | SUSE-SU-2026:3125-1 |
| SLES 15 SP4 | gstreamer-plugins-bad | 1.20.1-150400.3.29.1 | SUSE-SU-2026:3133-1 |
| SLES 12 SP5 | gstreamer-plugins-bad | 1.8.3-18.21.1 | SUSE-SU-2026:3299-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | gstreamer-plugins-bad | 1.26.7-160000.3.1 | SUSE-SU-2026:22817-1 |
| SLES for SAP 15 SP6 | gstreamer-plugins-bad | 1.24.0-150600.4.9.1 | SUSE-SU-2026:3058-1 |
| SLES for SAP 15 SP5 | gstreamer-plugins-bad | 1.22.0-150500.3.34.1 | SUSE-SU-2026:3125-1 |
| SLES for SAP 15 SP4 | gstreamer-plugins-bad | 1.20.1-150400.3.29.1 | SUSE-SU-2026:3133-1 |
| SLES 16.0 | gstreamer-plugins-bad | 1.26.7-160000.3.1 | SUSE-SU-2026:22817-1 |
| SLE Micro 6.2 | gstreamer-plugins-bad | 1.26.7-160000.3.1 | SUSE-SU-2026:22752-1 |
| SLE HPC 15 SP5 | gstreamer-plugins-bad | 1.22.0-150500.3.34.1 | SUSE-SU-2026:3125-1 |
| SLE HPC 15 SP4 | gstreamer-plugins-bad | 1.20.1-150400.3.29.1 | SUSE-SU-2026:3133-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | gstreamer-plugins-bad | 1.26.7-160000.3.1 | openSUSE-SU-2026:21370-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | gstreamer1-plugin-openh264 +3 | 1.24.10-1.amzn2023.0.6 | ALAS2023-2026-1917 |
Advisories 11
- WID-SEC-2026-1478 GStreamer: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 15, 2026
- WID-SEC-2026-1919 GStreamer: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 15, 2026
- SUSE-SU-2026:22817-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 28, 2026
- SUSE-SU-2026:3299-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 28, 2026
- SUSE-SU-2026:22752-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 23, 2026
- openSUSE-SU-2026:21370-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 22, 2026
- SUSE-SU-2026:3133-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 21, 2026
- SUSE-SU-2026:3125-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 21, 2026
- SUSE-SU-2026:3058-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 16, 2026
- ALAS2023-2026-1917 Important: gstreamer1-plugins-bad-free security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 7, 2026
- USN-8446-1 gst-plugins-bad1.0 vulnerabilities Ubuntu Security Notices (USN) · Jun 17, 2026
References
- https://access.redhat.com/security/cve/CVE-2026-53702 vdb-entry
- RHBZ#2487612 issue-tracking