Amazon Linux 2023 Security Advisory: ALAS2023-2025-1248
Advisory Released Date: 2025-10-27
Advisory Updated Date: 2025-10-27
Severity:
Important
Issue Overview:
YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure
Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read
The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module. (CVE-2025-11683)
Affected Packages:
perl-YAML-Syck
Issue Correction:
Run dnf update perl-YAML-Syck --releasever 2023.9.20251027 or dnf update --advisory ALAS2023-2025-1248 --releasever 2023.9.20251027 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:
perl-YAML-Syck-debugsource-1.36-1.amzn2023.0.1.aarch64
perl-YAML-Syck-debuginfo-1.36-1.amzn2023.0.1.aarch64
perl-YAML-Syck-1.36-1.amzn2023.0.1.aarch64
src:
perl-YAML-Syck-1.36-1.amzn2023.0.1.src
x86_64:
perl-YAML-Syck-debugsource-1.36-1.amzn2023.0.1.x86_64
perl-YAML-Syck-debuginfo-1.36-1.amzn2023.0.1.x86_64
perl-YAML-Syck-1.36-1.amzn2023.0.1.x86_64