Amazon Linux 2023 Security Advisory: ALAS2023-2026-3397
Advisory Released Date: 2026-11-09
Advisory Updated Date: 2026-11-09
A flaw was found in gst-plugins-base. A heap buffer overflow can be triggered when processing video buffers whose attached GstVideoMeta metadata declares plane strides and offsets that exceed the actual backing memory allocation. The metadata is not range-checked during deserialization, and the video frame mapping code does not verify that the declared plane geometry fits within the buffer before allowing consumers to read or write video data. A local attacker who controls the sending side of a GStreamer inter-process IPC pipeline can deliver a crafted buffer carrying fabricated strides, causing the receiving process to read or write beyond heap boundaries. Successful exploitation can cause a denial of service or potentially allow code execution within the affected process. (CVE-2026-86476)
Affected Packages:
gstreamer1-plugins-base
Issue Correction:
Run dnf update gstreamer1-plugins-base --releasever 2023.12.20261109 or dnf update --advisory ALAS2023-2026-3397 --releasever 2023.12.20261109 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
aarch64:
gstreamer1-plugins-base-tools-debuginfo-1.24.10-1.amzn2023.0.6.aarch64
gstreamer1-plugins-base-tools-1.24.10-1.amzn2023.0.6.aarch64
gstreamer1-plugins-base-debuginfo-1.24.10-1.amzn2023.0.6.aarch64
gstreamer1-plugins-base-debugsource-1.24.10-1.amzn2023.0.6.aarch64
gstreamer1-plugins-base-devel-1.24.10-1.amzn2023.0.6.aarch64
gstreamer1-plugins-base-1.24.10-1.amzn2023.0.6.aarch64
src:
gstreamer1-plugins-base-1.24.10-1.amzn2023.0.6.src
x86_64:
gstreamer1-plugins-base-tools-debuginfo-1.24.10-1.amzn2023.0.6.x86_64
gstreamer1-plugins-base-tools-1.24.10-1.amzn2023.0.6.x86_64
gstreamer1-plugins-base-debuginfo-1.24.10-1.amzn2023.0.6.x86_64
gstreamer1-plugins-base-devel-1.24.10-1.amzn2023.0.6.x86_64
gstreamer1-plugins-base-1.24.10-1.amzn2023.0.6.x86_64
gstreamer1-plugins-base-debugsource-1.24.10-1.amzn2023.0.6.x86_64