Amazon Linux 2 Security Advisory: ALAS2-2026-3830
Advisory Released Date: 2026-08-04
Advisory Updated Date: 2026-08-04
Severity:
Important
Issue Overview:
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. (CVE-2026-59691)
Affected Packages:
gstreamer-plugins-bad-free
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update gstreamer-plugins-bad-free or yum update --advisory ALAS2-2026-3830 to update your system.
New Packages:
aarch64:
gstreamer-plugins-bad-free-0.10.23-42.amzn2.0.5.aarch64
gstreamer-plugins-bad-free-devel-0.10.23-42.amzn2.0.5.aarch64
gstreamer-plugins-bad-free-devel-docs-0.10.23-42.amzn2.0.5.aarch64
gstreamer-plugins-bad-free-debuginfo-0.10.23-42.amzn2.0.5.aarch64
i686:
gstreamer-plugins-bad-free-0.10.23-42.amzn2.0.5.i686
gstreamer-plugins-bad-free-devel-0.10.23-42.amzn2.0.5.i686
gstreamer-plugins-bad-free-devel-docs-0.10.23-42.amzn2.0.5.i686
gstreamer-plugins-bad-free-debuginfo-0.10.23-42.amzn2.0.5.i686
src:
gstreamer-plugins-bad-free-0.10.23-42.amzn2.0.5.src
x86_64:
gstreamer-plugins-bad-free-0.10.23-42.amzn2.0.5.x86_64
gstreamer-plugins-bad-free-devel-0.10.23-42.amzn2.0.5.x86_64
gstreamer-plugins-bad-free-devel-docs-0.10.23-42.amzn2.0.5.x86_64
gstreamer-plugins-bad-free-debuginfo-0.10.23-42.amzn2.0.5.x86_64