CVE-2026-59691
Fixed in a distro release EPSS <1%CVSS 7.1
A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On, Red Hat Enterprise Linux 8.8 Telecommunications Update Service, Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 6
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | gstreamer1-plugins-bad-free | 1.26.7-2.el10_2.6 |
| AlmaLinux 10 | gstreamer1-plugins-bad-free-devel | 1.26.7-2.el10_2.6 |
| AlmaLinux 10 | gstreamer1-plugins-bad-free-libs | 1.26.7-2.el10_2.6 |
| AlmaLinux 8 | gstreamer1-plugins-bad-free | 1.16.1-9.el8_10.1 |
| AlmaLinux 8 | gstreamer1-plugins-bad-free-devel | 1.16.1-9.el8_10.1 |
| AlmaLinux 9 | gstreamer1-plugins-bad-free | 1.22.12-7.el9_8.3 |
| AlmaLinux 9 | gstreamer1-plugins-bad-free-devel | 1.22.12-7.el9_8.3 |
| AlmaLinux 9 | gstreamer1-plugins-bad-free-libs | 1.22.12-7.el9_8.3 |
| Debian 12 | gst-plugins-bad1.0 | 1.22.0-4+deb12u8 |
| Debian 13 | gst-plugins-bad1.0 | no fix |
| Debian 14 | gst-plugins-bad1.0 | 1.28.5-1 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-bad-free | 0:1.26.7-2.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-bad-free-debuginfo | 0:1.26.7-2.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-bad-free-debugsource | 0:1.26.7-2.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-bad-free-devel | 0:1.26.7-2.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-bad-free-libs | 0:1.26.7-2.el10_2.6 |
| Red Hat Enterprise Linux 10.2 | gstreamer1-plugins-bad-free-libs-debuginfo | 0:1.26.7-2.el10_2.6 |
| Red Hat Enterprise Linux 8 | gstreamer1-plugins-bad-free | 0:1.16.1-9.el8_10.1 |
| Red Hat Enterprise Linux 8 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-9.el8_10.1 |
| Red Hat Enterprise Linux 8 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-9.el8_10.1 |
| Red Hat Enterprise Linux 8 | gstreamer1-plugins-bad-free-devel | 0:1.16.1-9.el8_10.1 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-bad-free | 0:1.22.12-7.el9_8.3 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-bad-free-debuginfo | 0:1.22.12-7.el9_8.3 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-bad-free-debugsource | 0:1.22.12-7.el9_8.3 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-bad-free-devel | 0:1.22.12-7.el9_8.3 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-bad-free-libs | 0:1.22.12-7.el9_8.3 |
| Red Hat Enterprise Linux 9 | gstreamer1-plugins-bad-free-libs-debuginfo | 0:1.22.12-7.el9_8.3 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-bad-free | 0:1.24.11-3.el10_0.6 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-bad-free-debuginfo | 0:1.24.11-3.el10_0.6 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-bad-free-debugsource | 0:1.24.11-3.el10_0.6 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-bad-free-devel | 0:1.24.11-3.el10_0.6 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-bad-free-libs | 0:1.24.11-3.el10_0.6 |
| Red Hat Enterprise Linux eus 10.0 | gstreamer1-plugins-bad-free-libs-debuginfo | 0:1.24.11-3.el10_0.6 |
| Red Hat rhel aus 8.4 | gstreamer1-plugins-bad-free | 0:1.16.1-4.el8_4.4 |
| Red Hat rhel aus 8.4 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-4.el8_4.4 |
| Red Hat rhel aus 8.4 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-4.el8_4.4 |
| Red Hat rhel aus 8.6 | gstreamer1-plugins-bad-free | 0:1.16.1-4.el8_6.4 |
| Red Hat rhel aus 8.6 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-4.el8_6.4 |
| Red Hat rhel aus 8.6 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-4.el8_6.4 |
| Red Hat rhel e4s 8.8 | gstreamer1-plugins-bad-free | 0:1.16.1-4.el8_8.4 |
| Red Hat rhel e4s 8.8 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-4.el8_8.4 |
| Red Hat rhel e4s 8.8 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-4.el8_8.4 |
| Red Hat rhel e4s 9.2 | gstreamer1-plugins-bad-free | 0:1.18.4-9.el9_2.5 |
| Red Hat rhel e4s 9.2 | gstreamer1-plugins-bad-free-debuginfo | 0:1.18.4-9.el9_2.5 |
| Red Hat rhel e4s 9.2 | gstreamer1-plugins-bad-free-debugsource | 0:1.18.4-9.el9_2.5 |
| Red Hat rhel e4s 9.4 | gstreamer1-plugins-bad-free | 0:1.22.1-6.el9_4.6 |
| Red Hat rhel e4s 9.4 | gstreamer1-plugins-bad-free-debuginfo | 0:1.22.1-6.el9_4.6 |
| Red Hat rhel e4s 9.4 | gstreamer1-plugins-bad-free-debugsource | 0:1.22.1-6.el9_4.6 |
| Red Hat rhel els 7 | gstreamer-plugins-bad-free | 0:0.10.23-26.el7_9 |
| Red Hat rhel els 7 | gstreamer-plugins-bad-free-debuginfo | 0:0.10.23-26.el7_9 |
| Red Hat rhel els 7 | gstreamer-plugins-bad-free-devel | 0:0.10.23-26.el7_9 |
| Red Hat rhel els 7 | gstreamer-plugins-bad-free-devel-docs | 0:0.10.23-26.el7_9 |
| Red Hat rhel els 7 | gstreamer1-plugins-bad-free | 0:1.10.4-7.el7_9 |
| Red Hat rhel els 7 | gstreamer1-plugins-bad-free-debuginfo | 0:1.10.4-7.el7_9 |
| Red Hat rhel els 7 | gstreamer1-plugins-bad-free-devel | 0:1.10.4-7.el7_9 |
| Red Hat rhel els 7 | gstreamer1-plugins-bad-free-gtk | 0:1.10.4-7.el7_9 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-bad-free | 0:1.22.12-5.el9_6.6 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-bad-free-debuginfo | 0:1.22.12-5.el9_6.6 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-bad-free-debugsource | 0:1.22.12-5.el9_6.6 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-bad-free-devel | 0:1.22.12-5.el9_6.6 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-bad-free-libs | 0:1.22.12-5.el9_6.6 |
| Red Hat rhel eus 9.6 | gstreamer1-plugins-bad-free-libs-debuginfo | 0:1.22.12-5.el9_6.6 |
| Red Hat rhel eus long life 8.4 | gstreamer1-plugins-bad-free | 0:1.16.1-4.el8_4.4 |
| Red Hat rhel eus long life 8.4 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-4.el8_4.4 |
| Red Hat rhel eus long life 8.4 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-4.el8_4.4 |
| Red Hat rhel eus long life 8.6 | gstreamer1-plugins-bad-free | 0:1.16.1-4.el8_6.4 |
| Red Hat rhel eus long life 8.6 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-4.el8_6.4 |
| Red Hat rhel eus long life 8.6 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-4.el8_6.4 |
| Red Hat rhel tus 8.8 | gstreamer1-plugins-bad-free | 0:1.16.1-4.el8_8.4 |
| Red Hat rhel tus 8.8 | gstreamer1-plugins-bad-free-debuginfo | 0:1.16.1-4.el8_8.4 |
| Red Hat rhel tus 8.8 | gstreamer1-plugins-bad-free-debugsource | 0:1.16.1-4.el8_8.4 |
| Rocky Linux 10 | gstreamer1-plugins-bad-free | 0:1.26.7-2.el10_2.6 |
| Rocky Linux 8 | gstreamer1-plugins-bad-free | 0:1.16.1-9.el8_10.1 |
| Rocky Linux 9 | gstreamer1-plugins-bad-free | 0:1.22.12-7.el9_8.3 |
| Ubuntu 25.10 | gst-plugins-bad1.0 | no fix |
| Ubuntu 26.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu 26.10 | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 14.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 16.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 18.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 20.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 22.04 LTS | gst-plugins-bad1.0 | no fix |
| Ubuntu Pro 24.04 LTS | gst-plugins-bad1.0 | no fix |