Bug#1142035: perl: CVE-2026-57433

[Niko Tyni]

Control: retitle 1138906 perl: CVE-2026-57433: Storable signed integer overflow
Control: forcemerge 1138906 -1

On Tue, Jul 14, 2026 at 08:50:40AM +0200, Salvatore Bonaccorso wrote:
> Source: perl
> Version: 5.40.1-8
> Severity: important
> Tags: security upstream
> X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>
> 
> Hi,
> 
> The following vulnerability was published for perl.
> 
> CVE-2026-57433[0]:
> | 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.
> 
> 
> If you fix the vulnerability please also make sure to include the
> CVE (Common Vulnerabilities & Exposures) id in your changelog entry.
> 
> For further information see:
> 
> [0] https://security-tracker.debian.org/tracker/CVE-2026-57433
>     https://www.cve.org/CVERecord?id=CVE-2026-57433
> [1] https://lists.security.metacpan.org/cve-announce/msg/41780100/
> 
> Please adjust the affected versions in the BTS as needed.

This is #1138906 and is already fixed in testing/unstable (but not in stable
so far.)

So merging.

Salvatore: This didn't have a CVE number earlier. Would you like me to
retroactively add one to d/changelog in a future upload?

-- 
Niko