CVE-2026-57433
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.
CSIRTS triage
- What
- There is a signed integer overflow when deserializing a crafted SX_HOOK record.
- Who is affected
- Users of Storable versions before 3.41 are affected.
- Urgency
- Remediation is critical due to the critical severity of the vulnerability.
- Action
- Upgrade to Storable version 3.41 or later.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.36% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
Advisory coverage (2)
External references
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