EGOR Data::Intern::Shared up to 0.01 si_idx_find intern.h ID out-of-bounds

Summaryinfo

A vulnerability was found in EGOR Data::Intern::Shared up to 0.01. It has been declared as problematic. Affected by this issue is some unknown functionality of the file intern.h of the component si_idx_find. The manipulation of the argument ID results in out-of-bounds. This vulnerability is known as CVE-2026-59145. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability was found in EGOR Data::Intern::Shared up to 0.01. It has been classified as problematic. Affected is some unknown processing of the file intern.h of the component si_idx_find. The manipulation of the argument id with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Data::Intern::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated slot, reverse and arena indices in si_idx_find. The attach-time validator si_validate_header is thorough about the header and layout (magic, version, section offsets, total_size, count and arena_used) but does not validate the three arrays it then trusts. Every lookup in si_idx_find walks a triple indirection read straight from the mmap'd segment, arena[reverse[slots[i].id]], with no bound on slots[i].id against count, on the reverse[id] arena offset against arena_used, or on the arena record's length prefix. A local peer that can write the backing file can leave the header valid while poisoning a slot id, a reverse offset or an arena length prefix, so an id_of, intern or string lookup dereferences the chain out of bounds; because string() returns a file-controlled length of bytes from the arena, adjacent process memory can be disclosed.

The advisory is available at metacpan.org. This vulnerability is traded as CVE-2026-59145 since 07/02/2026. The exploitability is told to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit.

Upgrading to version 0.02 eliminates this vulnerability.

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Productinfo

Vendor

• EGOR

Name

• Data::Intern::Shared

Version

• 0.01

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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