Local IPC disclosure via insecure mmap creation
Published Jul 21, 2026 · Updated Jul 21, 2026
Information disclosure in Data::RoaringBitmap::Shared before 0.02 allows local users to read shared-memory IPC payloads. In roaring.h, open() creates the mmap backing file with mode 0666 and omits O_EXCL and O_NOFOLLOW, permitting broad read access and link following. Exposure requires access to a shared directory such as /tmp or /dev/shm; a pre-planted file or symlink can also redirect the segment open.
Summary
What happened
Information disclosure in Data::RoaringBitmap::Shared before 0.02 allows local users to read shared-memory IPC payloads. In roaring.h, open() creates the mmap backing file with mode 0666 and omits O_EXCL and O_NOFOLLOW, permitting broad read access and link following. Exposure requires access to a shared directory such as /tmp or /dev/shm; a pre-planted file or symlink can also redirect the segment open.
The record
- CVE
- CVE-2026-65065
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- Yegor Korablev
- Product
- Data::RoaringBitmap::Shared
- Classifications
- CWE-732, CWE-59, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 21, 2026CVE publishedPublication date reported by the CVE source.
- Jul 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <0.02
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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