# CVE-2025-0755: libbson-xs-perl: The various bson_append functions in the MongoDB C driver library may be susceptible to buffer overflow when performi...

CVE-2025-0755 is fixed in 4 products on 1 platform, first by libbson-1.0-0t64 1.26.0-1.1ubuntu2+esm1, released March 18, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-0755
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0079
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 18, 2025

## Description

The various bson_append functions in the MongoDB C driver library may be susceptible to buffer overflow when performing operations that could result in a final BSON document which exceeds the maximum allowable size (INT32_MAX), resulting in a segmentation fault and possible application crash. This issue affected libbson versions prior to 1.27.5, MongoDB Server v8.0 versions prior to 8.0.1 and MongoDB Server v7.0 versions prior to 7.0.16

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libbson-1.0-0t64 Ubuntu 24.04.5 LTS (noble) | 1.26.0-1.1ubuntu2+esm1 | [libbson-1.0-0t64 1.26.0-1.1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libbson-1.0-0t64-1.26.0-1.1ubuntu2-esm1.md) | Mar 18, 2025 |
| Linux | libbson-xs-perl Debian 12.15 (bookworm) | 0.8.4-2+deb12u1 | [DEBIAN-CVE-2025-0755](https://patchblox.com/security/data/fix/linux/debian-cve-2025-0755.md) | Mar 18, 2025 |
| Linux | libmongoc-1.0-0t64 Ubuntu 24.04.5 LTS (noble) | 1.26.0-1.1ubuntu2+esm1 | [libmongoc-1.0-0t64 1.26.0-1.1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libmongoc-1.0-0t64-1.26.0-1.1ubuntu2-esm1.md) | Mar 18, 2025 |
| Linux | mongo-c-driver Debian 12.15 (bookworm) | 1.23.1-1+deb12u1 | [DEBIAN-CVE-2025-0755](https://patchblox.com/security/data/fix/linux/debian-cve-2025-0755.md) | Mar 18, 2025 |
| Linux | mongo-c-driver Debian 13.5 (trixie) | 1.27.5-1 | [DEBIAN-CVE-2025-0755](https://patchblox.com/security/data/fix/linux/debian-cve-2025-0755.md) | Mar 18, 2025 |
| Linux | mongo-c-driver Debian 14 | 1.27.5-1 | [DEBIAN-CVE-2025-0755](https://patchblox.com/security/data/fix/linux/debian-cve-2025-0755.md) | Mar 18, 2025 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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