CVE-2026-59140

Description

Data::SortedSet::Shared versions before 0.03 for Perl allow an out-of-bounds read via unvalidated node indices in the rank and min/max query paths. The attach-time validator ss_validate_header bounds only the root index against the node pool (node_capacity). The order-statistics and min/max queries then follow children[], leftmost and rightmost node indices read raw from the mmap'd segment without bounding them against node_capacity. A full structural check (ss_validate_tree) exists but runs only via an explicit validate method, not on attach. A local peer that can write the backing file can leave the header valid while poisoning the tree links, so the next rank, min or max query dereferences an out-of-bounds node index, reading adjacent memory or crashing the process.

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Produits concernés

• EGOR Data::SortedSet::Shared

Scores CVSS

Faiblesses (CWE)

• CWE-125

Références

• https://metacpan.org/release/EGOR/Data-SortedSet-Shared-0.03/changes
• https://metacpan.org/release/EGOR/Data-SortedSet-Shared-0.03/diff/EGOR/Data-SortedSet-Shared-0.02#sortedset.h

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories