OSV-2025-266: Heap-buffer-overflow in lj_buf_ruleb128
A heap-buffer-overflow vulnerability exists in the lj_buf_ruleb128 function of Tarantool, as reported by OSS-Fuzz. The issue involves a read overflow on the heap, which could potentially lead to memory corruption. Multiple specific versions of Tarantool, including 3.4.0 through 3.8.1-entrypoint variants, are affected. No patch or official fix information is provided, and no known exploits are reported in the wild. The vulnerability was published on April 8, 2025.
AI Analysis
Technical Summary
This vulnerability is a heap-buffer-overflow read detected in the lj_buf_ruleb128 function within Tarantool, identified by OSS-Fuzz. The crash state involves functions lj_buf_ruleb128, lj_bcread, and cpparser, indicating the overflow occurs during buffer reading operations. The affected versions include multiple exact releases from 3.4.0 up to 3.8.1-entrypoint. There is no CVSS score or detailed impact analysis available, nor is there any vendor advisory or patch information provided.
Potential Impact
The heap-buffer-overflow read could lead to memory corruption, which might be exploitable to cause crashes or potentially arbitrary code execution depending on the context. However, no known exploits in the wild have been reported, and the exact impact beyond the crash is not detailed in the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or fix information is provided, users should monitor official Tarantool advisories and OSS-Fuzz updates for any forthcoming fixes or mitigations.
OSV-2025-266: Heap-buffer-overflow in lj_buf_ruleb128
Description
A heap-buffer-overflow vulnerability exists in the lj_buf_ruleb128 function of Tarantool, as reported by OSS-Fuzz. The issue involves a read overflow on the heap, which could potentially lead to memory corruption. Multiple specific versions of Tarantool, including 3.4.0 through 3.8.1-entrypoint variants, are affected. No patch or official fix information is provided, and no known exploits are reported in the wild. The vulnerability was published on April 8, 2025.
Affected software
pkg:generic/tarantoolRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a heap-buffer-overflow read detected in the lj_buf_ruleb128 function within Tarantool, identified by OSS-Fuzz. The crash state involves functions lj_buf_ruleb128, lj_bcread, and cpparser, indicating the overflow occurs during buffer reading operations. The affected versions include multiple exact releases from 3.4.0 up to 3.8.1-entrypoint. There is no CVSS score or detailed impact analysis available, nor is there any vendor advisory or patch information provided.
Potential Impact
The heap-buffer-overflow read could lead to memory corruption, which might be exploitable to cause crashes or potentially arbitrary code execution depending on the context. However, no known exploits in the wild have been reported, and the exact impact beyond the crash is not detailed in the available information.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or fix information is provided, users should monitor official Tarantool advisories and OSS-Fuzz updates for any forthcoming fixes or mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2025-266
- Osv Schema Version
- 1.6.0
- Aliases
- []
- Ecosystems
- ["OSS-Fuzz"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a50bac568715ace43587cef
Added to database: 07/10/2026, 09:26:29 UTC
Last enriched: 07/10/2026, 10:22:41 UTC
Last updated: 07/10/2026, 11:05:25 UTC
Views: 3
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