CVE-2024-6381: libbson Integer/Buffer Overflow — Fix

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

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CVSS v3.1 Score

4.0

MEDIUM

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

Weakness Type (CWE)

CWE-680 CWE-680

Affected Products

Vendor	Product	Versions
mongodb	libbson	< 1.26.2

References

Advisories & Patches

https://jira.mongodb.org/browse/CDRIVER-5622 https://jira.mongodb.org/browse/CDRIVER-5622

Other References

https://lists.debian.org/debian-lts-announce/2025/05/msg00012.html https://lists.debian.org/debian-lts-announce/2025/05/msg00027.html

Frequently Asked Questions

What is CVE-2024-6381? +

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 It has a CVSS v3.1 base score of 4.0 (MEDIUM).

How severe is CVE-2024-6381? +

CVE-2024-6381 has a CVSS v3.1 score of 4.0 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-6381? +

CVE-2024-6381 affects products from mongodb, specifically: libbson. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-6381? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-6381