Amazon Linux 2027 Preview Security Advisory: ALAS2027-2026-316
Advisory Released Date: 2026-11-09
Advisory Updated Date: 2026-11-10
GStreamer rtpL16depay Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.
The specific flaw exists within the processing of RTP payload elements. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31143. (CVE-2026-111183)
A flaw was found in GStreamer's gst-plugins-good isomp4 plugin. When processing a specially crafted MP4 or MOV file containing CEA-608 closed-caption data, an integer overflow in 32-bit unsigned arithmetic can bypass a bounds check in the caption parser. This leads to an out-of-bounds heap read of up to 244 bytes, which is then included in the downstream caption output. An attacker could exploit this by tricking a user into opening a malicious media file, potentially resulting in disclosure of adjacent heap memory or application crash. (CVE-2026-88914)
Affected Packages:
gstreamer1-plugins-good
Issue Correction:
Run dnf update gstreamer1-plugins-good --releasever 2027.0.20261109 or dnf update --advisory ALAS2027-2026-316 --releasever 2027.0.20261109 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2027 documentation
aarch64:
gstreamer1-plugins-good-gtk-debuginfo-1.28.6-1.amzn2027.0.2.aarch64
gstreamer1-plugins-good-gtk-1.28.6-1.amzn2027.0.2.aarch64
gstreamer1-plugins-good-debuginfo-1.28.6-1.amzn2027.0.2.aarch64
gstreamer1-plugins-good-debugsource-1.28.6-1.amzn2027.0.2.aarch64
gstreamer1-plugins-good-1.28.6-1.amzn2027.0.2.aarch64
src:
gstreamer1-plugins-good-1.28.6-1.amzn2027.0.2.src
x86_64:
gstreamer1-plugins-good-gtk-1.28.6-1.amzn2027.0.2.x86_64
gstreamer1-plugins-good-debugsource-1.28.6-1.amzn2027.0.2.x86_64
gstreamer1-plugins-good-1.28.6-1.amzn2027.0.2.x86_64
gstreamer1-plugins-good-gtk-debuginfo-1.28.6-1.amzn2027.0.2.x86_64
gstreamer1-plugins-good-debuginfo-1.28.6-1.amzn2027.0.2.x86_64