{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59146", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2026-07-02T16:24:17.913Z", "datePublished": "2026-07-21T19:04:56.729Z", "dateUpdated": "2026-07-21T19:04:56.729Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Data-SpatialHash-Shared", "product": "Data::SpatialHash::Shared", "programFiles": ["sphash.h"], "programRoutines": [{"name": "sph_walk_cell"}, {"name": "sph_alloc_slot"}], "repo": "https://github.com/vividsnow/perl5-data-spatialhash-shared", "vendor": "EGOR", "versions": [{"lessThan": "0.02", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "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.\n\nThe 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).\n\nA 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."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-787", "description": "CWE-787 Out-of-bounds Write", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-07-21T19:04:56.729Z"}, "references": [{"url": "https://metacpan.org/release/EGOR/Data-SpatialHash-Shared-0.02/diff/EGOR/Data-SpatialHash-Shared-0.01#sphash.h"}, {"tags": ["release-notes"], "url": "https://metacpan.org/release/EGOR/Data-SpatialHash-Shared-0.02/changes"}], "solutions": [{"lang": "en", "value": "Upgrade to Data::SpatialHash::Shared 0.02 or later, which bounds every entry index against the entry count before dereferencing it."}], "source": {"discovery": "UNKNOWN"}, "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", "workarounds": [{"lang": "en", "value": "For deployments that cannot upgrade to 0.02, place the backing file in a directory writable only by the owning user, so a local peer cannot tamper with the bucket chain and free list."}], "x_generator": {"engine": "cpansec-cna-tool 0.1"}}}}

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