OSV-2025-1020: Heap-buffer-overflow in mmcall
A heap-buffer-overflow vulnerability was identified in the mmcall component of Tarantool, reported by OSS-Fuzz. The issue involves an out-of-bounds write of 8 bytes on the heap, potentially leading to memory corruption. Multiple specific versions of Tarantool 3.5.x through 3.8.1-entrypoint are affected. No CVSS score or detailed impact analysis is provided, and no known exploits have been reported in the wild. No patch or remediation information is currently available.
AI Analysis
Technical Summary
OSS-Fuzz reported a heap-buffer-overflow vulnerability in the mmcall function of Tarantool, characterized by an 8-byte heap write out-of-bounds. The crash state includes functions mmcall, lj_meta_tset, and lj_vmeta_tsetv. This vulnerability affects multiple exact versions of Tarantool from 3.5.0 through 3.8.1-entrypoint. There is no CVSS score or vendor advisory indicating patch availability or mitigation. No known exploitation in the wild has been documented.
Potential Impact
The heap-buffer-overflow can lead to memory corruption, which may cause application crashes or potentially allow an attacker to execute arbitrary code or escalate privileges if exploited. However, no known exploits in the wild have been reported, and the exact impact beyond the crash is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official Tarantool channels for updates. No specific mitigation or workaround is provided in the available data.
OSV-2025-1020: Heap-buffer-overflow in mmcall
Description
A heap-buffer-overflow vulnerability was identified in the mmcall component of Tarantool, reported by OSS-Fuzz. The issue involves an out-of-bounds write of 8 bytes on the heap, potentially leading to memory corruption. Multiple specific versions of Tarantool 3.5.x through 3.8.1-entrypoint are affected. No CVSS score or detailed impact analysis is provided, and no known exploits have been reported in the wild. No patch or remediation information is currently available.
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
OSS-Fuzz reported a heap-buffer-overflow vulnerability in the mmcall function of Tarantool, characterized by an 8-byte heap write out-of-bounds. The crash state includes functions mmcall, lj_meta_tset, and lj_vmeta_tsetv. This vulnerability affects multiple exact versions of Tarantool from 3.5.0 through 3.8.1-entrypoint. There is no CVSS score or vendor advisory indicating patch availability or mitigation. No known exploitation in the wild has been documented.
Potential Impact
The heap-buffer-overflow can lead to memory corruption, which may cause application crashes or potentially allow an attacker to execute arbitrary code or escalate privileges if exploited. However, no known exploits in the wild have been reported, and the exact impact beyond the crash is not detailed.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should monitor official Tarantool channels for updates. No specific mitigation or workaround is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- OSV-2025-1020
- Osv Schema Version
- 1.7.5
- Aliases
- []
- Ecosystems
- ["OSS-Fuzz"]
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a50bac568715ace43587cf5
Added to database: 07/10/2026, 09:26:29 UTC
Last enriched: 07/10/2026, 10:22:52 UTC
Last updated: 07/10/2026, 11:05:24 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.