CVE-2026-59146 (GCVE-0-2026-59146)

Vulnerability from cvelistv5 – Published: 2026-07-21 19:04 – Updated: 2026-07-22 19:36
VLAI
Title
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
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 19:36 UTC
CWE
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 61/100 over 361 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
EGOR Data::SpatialHash::Shared Affected: 0 , < 0.02 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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