Amazon Linux 2023 Security Advisory: ALAS2023-2026-3205
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-10-12
Severity:
Medium
Issue Overview:
On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root. (CVE-2026-39822)
Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello. (CVE-2026-42505)
Affected Packages:
docker
Issue Correction:
Run dnf update docker --releasever 2023.12.20261012 or dnf update --advisory ALAS2023-2026-3205 --releasever 2023.12.20261012 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
aarch64:
docker-debuginfo-25.0.16-1.amzn2023.0.5.aarch64
docker-25.0.16-1.amzn2023.0.5.aarch64
docker-debugsource-25.0.16-1.amzn2023.0.5.aarch64
src:
docker-25.0.16-1.amzn2023.0.5.src
x86_64:
docker-debuginfo-25.0.16-1.amzn2023.0.5.x86_64
docker-25.0.16-1.amzn2023.0.5.x86_64
docker-debugsource-25.0.16-1.amzn2023.0.5.x86_64