CyberRota Analysis
AI-GeneratedVersions of Data::SpatialHash::Shared prior to 0.02 for Perl are vulnerable to out-of-bounds reads and writes due to unvalidated indices in the sph_walk_cell and sph_alloc_slot functions. This can lead to memory corruption or process crashes, particularly if a local user can manipulate the backing file. Organizations using affected versions should prioritize patching this vulnerability to mitigate potential exploitation risks.
Original NVD Description
Data::SpatialHash::Shared versions before 0.02 for Perl allow out-of-bounds reads and writes via unvalidated bucket, link and free-list indices in sph_walk_cell and sph_alloc_slot. The attach-time validator sph_validate_header checks the header scalars and region layout against the file size, but does not validate the array contents it then trusts. sph_walk_cell reads entries[buckets[b]] and follows each entry's next link raw, and sph_alloc_slot writes through a file-stored free_head index, none bounded against the entry count (max_entries). A local peer that can write the backing file can leave the header valid while poisoning the bucket chain and free list, so a query reads through an out-of-bounds bucket and next index and an insert writes through an out-of-bounds free-list head, corrupting memory or crashing the process.