CPANSA-Data-SpatialHash-Shared-2026-59146: Data-SpatialHash-Shared vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-07-21T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-07-21T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | 7.8 | Severity | High |
| Original language | Language | en | |
| Also referred to | |||
Vulnerability 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.
Vulnerabilities
CVE-2026-59146
Vulnerability DescriptionData::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.
| Weakness | CWE-125 : Out-of-bounds Read |
|---|
Product status
Known affected
| Product | Score | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Data-SpatialHash-Shared less than 0.02 |
|
Fixed
- Data-SpatialHash-Shared greater than or equal 0.02
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-Data-SpatialHash-Shared-2026-59146 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-data-spatialhash-shared-2026-59146.json - https://metacpan.org/release/EGOR/Data-SpatialHash-Shared-0.02/changes external
https://metacpan.org/release/EGOR/Data-SpatialHash-Shared-0.02/changes - https://metacpan.org/release/EGOR/Data-SpatialHash-Shared-0.02/diff/EGOR/Data-SpatialHash-Shared-0.01#sphash.h external
https://metacpan.org/release/EGOR/Data-SpatialHash-Shared-0.02/diff/EGOR/Data-SpatialHash-Shared-0.01#sphash.h - CVE-2026-59146 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-59146
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Tue Jul 21 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/