CVE-2026-57433

Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record

CVE-2026-57433 is fixed in 17 products on 1 platform, first by libperl5.26 5.26.1-6ubuntu0.7+esm3, released July 13, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
9.8
Critical
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0048
41st percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
libperl5.26 · Ubuntu 18.04.6 LTS (bionic) 5.26.1-6ubuntu0.7+esm3 libperl5.26 5.26.1-6ubuntu0.7+esm3 Jul 13, 2026
libperl5.30 · Ubuntu 20.04 LTS (focal) 5.30.0-9ubuntu0.5+esm3 libperl5.30 5.30.0-9ubuntu0.5+esm3 Jul 13, 2026
libperl5.34 · Ubuntu 22.04.1 LTS (jammy) 5.34.0-3ubuntu1.8 libperl5.34 5.34.0-3ubuntu1.8 Jul 13, 2026
libperl5.38t64 · Ubuntu 24.04.5 LTS (noble) 5.38.2-3.2ubuntu0.4 libperl5.38t64 5.38.2-3.2ubuntu0.4 Jul 13, 2026
libperl5.40 · Ubuntu 26.04.1 LTS (resolute) 5.40.1-7ubuntu0.3 libperl5.40 5.40.1-7ubuntu0.3 Jul 13, 2026
perl · Debian 12.15 (bookworm) 5.36.0-7+deb12u4 DEBIAN-CVE-2026-57433 Jul 18, 2026
perl · Debian 13.5 (trixie) 5.40.1-6+deb13u1 DEBIAN-CVE-2026-57433 Jul 18, 2026
perl · Debian 14 5.40.1-8 DEBIAN-CVE-2026-57433 Jul 18, 2026
perl · Ubuntu 18.04.6 LTS (bionic) 5.26.1-6ubuntu0.7+esm3 perl 5.26.1-6ubuntu0.7+esm3 Jul 13, 2026
perl · Ubuntu 20.04 LTS (focal) 5.30.0-9ubuntu0.5+esm3 perl 5.30.0-9ubuntu0.5+esm3 Jul 13, 2026
perl · Ubuntu 22.04.1 LTS (jammy) 5.34.0-3ubuntu1.8 perl 5.34.0-3ubuntu1.8 Jul 13, 2026
perl · Ubuntu 24.04.5 LTS (noble) 5.38.2-3.2ubuntu0.4 perl 5.38.2-3.2ubuntu0.4 Jul 13, 2026
perl · Ubuntu 26.04.1 LTS (resolute) 5.40.1-7ubuntu0.3 perl 5.40.1-7ubuntu0.3 Jul 13, 2026
perl-Storable · amzn 2023 1:3.37-522.amzn2023.0.3 ALAS2023-2026-3203 Nov 7, 2026
perl-Storable-debuginfo · amzn 2023 1:3.37-522.amzn2023.0.3 ALAS2023-2026-3203 Nov 7, 2026
perl-Storable-debugsource · amzn 2023 1:3.37-522.amzn2023.0.3 ALAS2023-2026-3203 Nov 7, 2026
perl-Storable-tests · amzn 2023 1:3.37-522.amzn2023.0.3 ALAS2023-2026-3203 Nov 7, 2026
perl-base · Ubuntu 18.04.6 LTS (bionic) 5.26.1-6ubuntu0.7+esm3 perl-base 5.26.1-6ubuntu0.7+esm3 Jul 13, 2026
perl-base · Ubuntu 20.04 LTS (focal) 5.30.0-9ubuntu0.5+esm3 perl-base 5.30.0-9ubuntu0.5+esm3 Jul 13, 2026
perl-base · Ubuntu 22.04.1 LTS (jammy) 5.34.0-3ubuntu1.8 perl-base 5.34.0-3ubuntu1.8 Jul 13, 2026
perl-base · Ubuntu 24.04.5 LTS (noble) 5.38.2-3.2ubuntu0.4 perl-base 5.38.2-3.2ubuntu0.4 Jul 13, 2026
perl-base · Ubuntu 26.04.1 LTS (resolute) 5.40.1-7ubuntu0.3 perl-base 5.40.1-7ubuntu0.3 Jul 13, 2026
perl-debug · Ubuntu 18.04.6 LTS (bionic) 5.26.1-6ubuntu0.7+esm3 perl-debug 5.26.1-6ubuntu0.7+esm3 Jul 13, 2026
perl-debug · Ubuntu 20.04 LTS (focal) 5.30.0-9ubuntu0.5+esm3 perl-debug 5.30.0-9ubuntu0.5+esm3 Jul 13, 2026
perl-debug · Ubuntu 22.04.1 LTS (jammy) 5.34.0-3ubuntu1.8 perl-debug 5.34.0-3ubuntu1.8 Jul 13, 2026
perl-debug · Ubuntu 24.04.5 LTS (noble) 5.38.2-3.2ubuntu0.4 perl-debug 5.38.2-3.2ubuntu0.4 Jul 13, 2026
perl-debug · Ubuntu 26.04.1 LTS (resolute) 5.40.1-7ubuntu0.3 perl-debug 5.40.1-7ubuntu0.3 Jul 13, 2026
perl-modules-5.26 · Ubuntu 18.04.6 LTS (bionic) 5.26.1-6ubuntu0.7+esm3 perl-modules-5.26 5.26.1-6ubuntu0.7+esm3 Jul 13, 2026
perl-modules-5.30 · Ubuntu 20.04 LTS (focal) 5.30.0-9ubuntu0.5+esm3 perl-modules-5.30 5.30.0-9ubuntu0.5+esm3 Jul 13, 2026
perl-modules-5.34 · Ubuntu 22.04.1 LTS (jammy) 5.34.0-3ubuntu1.8 perl-modules-5.34 5.34.0-3ubuntu1.8 Jul 13, 2026
perl-modules-5.38 · Ubuntu 24.04.5 LTS (noble) 5.38.2-3.2ubuntu0.4 perl-modules-5.38 5.38.2-3.2ubuntu0.4 Jul 13, 2026
perl-modules-5.40 · Ubuntu 26.04.1 LTS (resolute) 5.40.1-7ubuntu0.3 perl-modules-5.40 5.40.1-7ubuntu0.3 Jul 13, 2026

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