Amazon Linux 2 (EOS) Security Advisory: ALAS2-2026-3989
Advisory Released Date: 2026-10-12
Advisory Updated Date: 2026-10-12
Severity:
Medium
Issue Overview:
Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record.
retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value.
A crafted blob passed to thaw or retrieve triggers the overflow; av_extend receives the negative count and dies with a panic, terminating the deserialization. (CVE-2026-57433)
Affected Packages:
perl-Storable
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 perl-Storable or yum update --advisory ALAS2-2026-3989 to update your system.
New Packages:
aarch64:
perl-Storable-2.45-3.amzn2.0.4.aarch64
perl-Storable-debuginfo-2.45-3.amzn2.0.4.aarch64
i686:
perl-Storable-2.45-3.amzn2.0.4.i686
perl-Storable-debuginfo-2.45-3.amzn2.0.4.i686
src:
perl-Storable-2.45-3.amzn2.0.4.src
x86_64:
perl-Storable-2.45-3.amzn2.0.4.x86_64
perl-Storable-debuginfo-2.45-3.amzn2.0.4.x86_64