ALAS2027-2026-297

Package updates are available for Amazon Linux 2027 that fix the following vulnerabilities:
CVE-2026-86476:
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.

aarch64:
    gstreamer1-plugins-base-tools-debuginfo-1.28.6-1.amzn2027.0.2.aarch64
    gstreamer1-plugins-base-tools-1.28.6-1.amzn2027.0.2.aarch64
    gstreamer1-plugins-base-devel-1.28.6-1.amzn2027.0.2.aarch64
    gstreamer1-plugins-base-debuginfo-1.28.6-1.amzn2027.0.2.aarch64
    gstreamer1-plugins-base-debugsource-1.28.6-1.amzn2027.0.2.aarch64
    gstreamer1-plugins-base-1.28.6-1.amzn2027.0.2.aarch64

src:
    gstreamer1-plugins-base-1.28.6-1.amzn2027.0.2.src

x86_64:
    gstreamer1-plugins-base-debugsource-1.28.6-1.amzn2027.0.2.x86_64
    gstreamer1-plugins-base-devel-1.28.6-1.amzn2027.0.2.x86_64
    gstreamer1-plugins-base-tools-debuginfo-1.28.6-1.amzn2027.0.2.x86_64
    gstreamer1-plugins-base-tools-1.28.6-1.amzn2027.0.2.x86_64
    gstreamer1-plugins-base-debuginfo-1.28.6-1.amzn2027.0.2.x86_64
    gstreamer1-plugins-base-1.28.6-1.amzn2027.0.2.x86_64