Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-3895
Advisory Released Date: 2026-08-31
Advisory Updated Date: 2026-08-31
Severity:
Important
Issue Overview:
A heap out-of-bounds write vulnerability was found in the GStreamer gst-plugins-bad adpcmdec element when decoding IMA/DVI ADPCM audio. Insufficient validation of the per-block sample count for multi-channel streams allows a crafted WAV file to cause writes beyond the allocated output buffer. This can lead to application crash, denial of service, memory corruption, or potentially arbitrary code execution when untrusted media is processed. (CVE-2026-19387)
Affected Packages:
gstreamer1-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 gstreamer1-plugins-bad-free or yum update --advisory ALAS2-2026-3895 to update your system.
New Packages:
aarch64:
gstreamer1-plugins-bad-free-1.18.4-5.amzn2.0.9.aarch64
gstreamer1-plugins-bad-free-devel-1.18.4-5.amzn2.0.9.aarch64
gstreamer1-plugins-bad-free-debuginfo-1.18.4-5.amzn2.0.9.aarch64
src:
gstreamer1-plugins-bad-free-1.18.4-5.amzn2.0.9.src
x86_64:
gstreamer1-plugins-bad-free-1.18.4-5.amzn2.0.9.x86_64
gstreamer1-plugins-bad-free-devel-1.18.4-5.amzn2.0.9.x86_64
gstreamer1-plugins-bad-free-debuginfo-1.18.4-5.amzn2.0.9.x86_64