🛡️ CVE-2024-6381 — libbson

🟡 CVSS 4.0 — Medium ✅ No Known Exploit CWE-680 NVD

4.0

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

The bson_strfreev function in the MongoDB C driver library may be susceptible to an integer overflow where the function will try to free memory at a negative offset. This may result in memory corruption. This issue affected libbson versions prior to 1.26.2

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

Weakness class

CVE-2024-6381 is classified as CWE-680: Integer Overflow to Buffer Overflow. The product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow.

Affected software

CVE-2024-6381 is recorded against 1 package.

libbson (fixed in 1.26.2)

Timeline and source

Published on 2 July 2024 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

jira.mongodb.org
jira.mongodb.org
lists.debian.org
lists.debian.org

CVE-2024-6381 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity MEDIUM

CVSS Score 4.0

CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE CWE-680

Public Exploit ✅ No

Source NVD

Published 2024-07-02

Updated 2026-08-11

Modified 2026-06-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
libbson	—	1.26.2

References

Issue Tracking, Vendor Advisory https://jira.mongodb.org/browse/CDRIVER-5622

https://lists.debian.org/debian-lts-announce/2025/05/msg00012.html

https://lists.debian.org/debian-lts-announce/2025/05/msg00027.html

🔗 NVD 🔗 Mitre

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