Amazon Linux 2023 Security Advisory: ALAS2023-2026-1989
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
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:
golang-github-cpuguy83-md2man
Issue Correction:
Run dnf update golang-github-cpuguy83-md2man --releasever 2023.12.20260720 or dnf update --advisory ALAS2023-2026-1989 --releasever 2023.12.20260720 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:
golang-github-cpuguy83-md2man-debuginfo-2.0.2-24.amzn2023.0.9.aarch64
golang-github-cpuguy83-md2man-debugsource-2.0.2-24.amzn2023.0.9.aarch64
golang-github-cpuguy83-md2man-2.0.2-24.amzn2023.0.9.aarch64
noarch:
compat-golang-github-cpuguy83-md2man-2-devel-2.0.2-24.amzn2023.0.9.noarch
golang-github-cpuguy83-md2man-devel-2.0.2-24.amzn2023.0.9.noarch
src:
golang-github-cpuguy83-md2man-2.0.2-24.amzn2023.0.9.src
x86_64:
golang-github-cpuguy83-md2man-debuginfo-2.0.2-24.amzn2023.0.9.x86_64
golang-github-cpuguy83-md2man-debugsource-2.0.2-24.amzn2023.0.9.x86_64
golang-github-cpuguy83-md2man-2.0.2-24.amzn2023.0.9.x86_64