EUVD-2026-46366
GHSA-wwq3-v3pc-8w9p
Lifecycle Timeline
2DescriptionCVE.org
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.
Analysis
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. …
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Multiple cross-site scripting (XSS) vulnerabilities in the Data module 6.x-1.x before 6.x-1.0 and 7.x-1.x before 7.x-1.0
Data::DisjointSet::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_
Data::SpatialHash::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_
Data::Intern::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL
Data::RingBuffer::Shared versions before 0.04 for Perl create a world-readable mmap backing file and open it without O_E
Data::RoaringBitmap::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without
Data::HashMap::Shared versions before 0.14 for Perl create a world-readable mmap backing file and open it without O_EXCL
Data::RadixTree::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EX
Data::SortedSet::Shared versions before 0.03 for Perl create a world-readable mmap backing file and open it without O_EX
Data::ReqRep::Shared versions before 0.05 for Perl create a world-readable mmap backing file and open it without O_EXCL
Data::PubSub::Shared versions before 0.07 for Perl create a world-readable mmap backing file and open it without O_EXCL
Data::NDArray::Shared versions before 0.02 for Perl create a world-readable mmap backing file and open it without O_EXCL
Same weakness CWE-125 – Out-of-bounds Read
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External POC / Exploit Code
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