CVE-2025-0755

Name	CVE-2025-0755
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
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mongo-c-driver (PTS)	bullseye	1.17.6-1	vulnerable
	bookworm	1.23.1-1	vulnerable
	sid, trixie	1.30.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mongo-c-driver	source	(unstable)	1.27.5-1

Notes

[bookworm] - mongo-c-driver <no-dsa> (Minor issue; can be fixed via point-release)
https://jira.mongodb.org/browse/SERVER-94461
Fixed by: https://github.com/mongodb/mongo-c-driver/commit/63c3d6f70180f151ffd201376eb33793357e5418 (1.28.0)
Fixed by: https://github.com/mongodb/mongo-c-driver/commit/d3cdb626be30748b9360451023c75438ec346a38 (1.27.5)