CVE-2026-59146

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-07-21 20:17

Updated : 2026-07-22 20:17

NVD link : CVE-2026-59146

Mitre link : CVE-2026-59146

CVE.ORG link : CVE-2026-59146

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

CWE-787

Out-of-bounds Write

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