Bug#1142035: perl: CVE-2026-57433

[Salvatore Bonaccorso]

Hi Niko,

On Tue, Jul 14, 2026 at 11:06:32AM +0300, Niko Tyni wrote:
> 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.

Ups, apologies for that!

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

It is fine, not strictly needed. I made sure to fix the metadata in
the security-tracker now.

Regards,
Salvatore