Description
A heap buffer overflow vulnerability was found in GStreamer's librfb (RFB/VNC client). The rectangle bounds check incorrectly validates area rather than individual dimensions, allowing a malicious VNC server to send a rectangle that extends beyond the framebuffer. A remote attacker could set up a malicious VNC server and trick a user into connecting, resulting in an out-of-bounds heap write that could lead to code execution or a crash.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
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 | 1.28.5-1 | — |
| Debian 13 | gst-plugins-bad1.0 | 1.26.2-3+deb13u3 | — |
| Debian 12 | gst-plugins-bad1.0 | 1.22.0-4+deb12u8 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | gst-plugins-bad1.0 | No fix yet | — |
| Ubuntu 26.04 LTS | gst-plugins-bad1.0 | No fix yet | — |
| 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 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | gstreamer1-plugins-bad-free +2 | 1.26.7-2.el10_2.4 | RHSA-2026:36749 |
| RHEL 9 | gstreamer1-plugins-bad-free +2 | 1.22.12-7.el9_8.1 | RHSA-2026:36834 |
| RHEL 8 | gstreamer1-plugins-bad-free +1 | 1.16.1-8.el8_10 | RHSA-2026:37130 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10.0 EUS | gstreamer1-plugins-bad-free +2 | 1.24.11-3.el10_0.4 | RHSA-2026:47717 |
| RHEL 9.6 EUS | gstreamer1-plugins-bad-free +2 | 1.22.12-5.el9_6.4 | RHSA-2026:47070 |
| RHEL 9.4 E4S | gstreamer1-plugins-bad-free | 1.22.1-6.el9_4.4 | RHSA-2026:47071 |
| RHEL 9.2 E4S | gstreamer1-plugins-bad-free | 1.18.4-9.el9_2.3 | RHSA-2026:47069 |
| RHEL 8.8 TUS | gstreamer1-plugins-bad-free | 1.16.1-4.el8_8.2 | RHSA-2026:47718 |
| RHEL 8.8 E4S | gstreamer1-plugins-bad-free | 1.16.1-4.el8_8.2 | RHSA-2026:47718 |
| RHEL 8.6 EUS Long Life | gstreamer1-plugins-bad-free | 1.16.1-4.el8_6.2 | RHSA-2026:47075 |
| RHEL 8.6 AUS | gstreamer1-plugins-bad-free | 1.16.1-4.el8_6.2 | RHSA-2026:47075 |
| RHEL 8.4 EUS Long Life | gstreamer1-plugins-bad-free | 1.16.1-4.el8_4.2 | RHSA-2026:47076 |
| RHEL 8.4 AUS | gstreamer1-plugins-bad-free | 1.16.1-4.el8_4.2 | RHSA-2026:47076 |
| RHEL 7 ELS | gstreamer-plugins-bad-free +2 | 0.10.23-25.el7_9 | RHSA-2026:49517 |
| RHEL 7 ELS | gstreamer1-plugins-bad-free +2 | 1.10.4-6.el7_9 | RHSA-2026:47176 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | gstreamer1-plugins-bad-free +2 | 1.26.7-2.el10_2.4 | ALSA-2026:36749 |
| AlmaLinux 9 | gstreamer1-plugins-bad-free +2 | 1.22.12-7.el9_8.1 | ALSA-2026:36834 |
| AlmaLinux 8 | gstreamer1-plugins-bad-free +1 | 1.16.1-8.el8_10 | ALSA-2026:37130 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | gstreamer1-plugins-bad-free | 1.26.7-2.el10_2.4 | RLSA-2026:36749 |
| Rocky Linux 9 | gstreamer1-plugins-bad-free | 1.22.12-7.el9_8.1 | RLSA-2026:36834 |
| Rocky Linux 8 | gstreamer1-plugins-bad-free | 1.16.1-8.el8_10 | RLSA-2026:37130 |
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 Tumbleweed | gstreamer-plugins-bad | 1.28.4+24-1.1 | openSUSE-SU-2026:11088-1 |
| 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 |
| Amazon Linux 2 | gstreamer-plugins-bad-free +2 | 0.10.23-42.amzn2.0.4 | ALAS2-2026-3791 |
| Amazon Linux 2 | gstreamer1-plugins-bad-free +1 | 1.18.4-5.amzn2.0.8 | ALAS2-2026-3832 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | gstreamer1-plugins-bad-free +2 | 1.26.7-2.el10_2.4 | ELSA-2026-36749 |
| Oracle Linux 9 | gstreamer1-plugins-bad-free +2 | 1.22.12-7.el9_8.1 | ELSA-2026-36834 |
| Oracle Linux 8 | gstreamer1-plugins-bad-free +1 | 1.16.1-8.0.1.el8_10 | ELSA-2026-37130 |
| Oracle Linux 7 | gstreamer1-plugins-bad-free +2 | 1.10.4-4.0.3.el7_9 | ELSA-2026-47176 |
Advisories 34
- RHSA-2026:36834 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- ALSA-2026:36834 Important: gstreamer1-plugins-bad-free security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:36749 Important: gstreamer1-plugins-bad-free security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:37130 Important: gstreamer1-plugins-bad-free security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-1919 GStreamer: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 15, 2026
- ELSA-2026-47176 Important: gstreamer1-plugins-bad-free security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 10, 2026
- ALAS2-2026-3832 Important: gstreamer1-plugins-bad-free security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 4, 2026
- RHSA-2026:49517 Red Hat Security Advisory: gstreamer-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47718 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47717 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47176 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47076 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47075 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47071 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47069 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:47070 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:37130 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 2026
- RHSA-2026:36749 Red Hat Security Advisory: gstreamer1-plugins-bad-free security update Red Hat Security Advisories (RHSA) · Aug 4, 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-2026:3125-1 Security update for gstreamer-plugins-bad SUSE / openSUSE Security Updates · Jul 21, 2026
- SUSE-SU-2026:3133-1 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
- ELSA-2026-36749 Important: gstreamer1-plugins-bad-free security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Jul 16, 2026
- RLSA-2026:36749 Important: gstreamer1-plugins-bad-free security update Rocky Linux Security Advisories · Jul 10, 2026
- RLSA-2026:36834 Important: gstreamer1-plugins-bad-free security update Rocky Linux Security Advisories · Jul 10, 2026
- RLSA-2026:37130 Important: gstreamer1-plugins-bad-free security update Rocky Linux Security Advisories · Jul 10, 2026
- ELSA-2026-37130 Important: gstreamer1-plugins-bad-free security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 9, 2026
- ELSA-2026-36834 Important: gstreamer1-plugins-bad-free security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 8, 2026
- ALAS2-2026-3791 Important: gstreamer-plugins-bad-free security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jul 7, 2026
- ALAS2023-2026-1917 Important: gstreamer1-plugins-bad-free security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 7, 2026
- openSUSE-SU-2026:11088-1 gstreamer-plugins-bad-1.28.4+24-1.1 on GA media SUSE / openSUSE Security Updates · Jun 24, 2026
References
- RHSA-2026:36749 vendor-advisory
- RHSA-2026:36834 vendor-advisory
- RHSA-2026:37130 vendor-advisory
- RHSA-2026:47069 vendor-advisory
- RHSA-2026:47070 vendor-advisory
- RHSA-2026:47071 vendor-advisory
- RHSA-2026:47075 vendor-advisory
- RHSA-2026:47076 vendor-advisory
- RHSA-2026:47176 vendor-advisory
- RHSA-2026:47717 vendor-advisory
- RHSA-2026:47718 vendor-advisory
- RHSA-2026:49517 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-52720 vdb-entry
- RHBZ#2486731 issue-tracking
- https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5105