The attach-time validator rdx_validate_header checks the header scalars and region layout against the file size, but does not validate the node records it then trusts. rdx_find_locked indexes nodes[cur].children[k] and reads each node's label_off and label_len raw from the mmap'd segment, none bounded against the node count or the arena size.
A local peer that can write the backing file can leave the header valid while poisoning the node records, so a lookup dereferences an out-of-bounds node or arena index, reading adjacent memory or crashing the process.
Analysis
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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| EGOR | Data::RadixTree::Shared | unaffected |
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Vendor Solution
Upgrade to Data::RadixTree::Shared 0.02 or later, which bounds the node and arena indices before dereferencing them.
Vendor Workaround
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 node records the lookup path traverses.
Tracking
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Tue, 21 Jul 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Data::RadixTree::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated node and arena indices in rdx_find_locked. The attach-time validator rdx_validate_header checks the header scalars and region layout against the file size, but does not validate the node records it then trusts. rdx_find_locked indexes nodes[cur].children[k] and reads each node's label_off and label_len raw from the mmap'd segment, none bounded against the node count or the arena size. A local peer that can write the backing file can leave the header valid while poisoning the node records, so a lookup dereferences an out-of-bounds node or arena index, reading adjacent memory or crashing the process. | |
| Title | Data::RadixTree::Shared versions before 0.02 for Perl allow an out-of-bounds read via unvalidated node and arena indices in rdx_find_locked | |
| Weaknesses | CWE-125 | |
| References |
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MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-07-21T19:03:34.453Z
Reserved: 2026-07-02T16:24:17.912Z
Link: CVE-2026-59141
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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CWE-125
Out-of-bounds Read