CVE WatchJul 23, 2026

CVE-2026-59143

Data::RoaringBitmap::Shared versions before 0.02 for Perl allow an out-of-bounds read via an unvalidated container offset and cardinality in

CVSS

6.3

Medium

EPSS

0.3%

p22

KEV

—

Exploit Today

0-100

Published: Jul 21, 2026 · Last modified: Jul 23, 2026 · CWE-125

EPSS · 30d

0.2%EPSS · 30 days0.3%

2026-08-102026-09-07

Technical description

Data::RoaringBitmap::Shared versions before 0.02 for Perl allow an out-of-bounds read via an unvalidated container offset and cardinality in rb_contains_locked. The attach-time validator rb_validate_header checks the header scalars and region layout against the file size, but does not validate the bucket contents it then trusts. rb_contains_locked forms a container pointer as pool + container_off * 8192 from a raw file-stored offset and then searches over a file-stored cardinality, neither bounded against the container pool capacity or the fixed 8192-byte slot size. A local peer that can write the backing file can leave the header valid while poisoning a bucket, so the next membership query dereferences a file-controlled wild pointer and scans a file-controlled count, reading adjacent memory or crashing the process.

Official references

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