DEBIAN-CVE-2026-93395

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Source

https://security-tracker.debian.org/tracker/CVE-2026-93395

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93395.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-93395

Upstream

CVE-2026-93395

Published

2026-09-17T21:17:56Z

Modified

2026-09-19T22:47:42Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

[none]

Details

A missing lower-bound validation in the bson_new_from_buffer() function of libbson allows an integer underflow when processing BSON data with a zero-length prefix. The function reads a 32-bit document length from the input buffer but does not verify that the value is at least 5 (the minimum valid BSON document size) before using it in an array index calculation. When the length field is zero, the expression used to check the document's null terminator wraps to UINT32_MAX, causing a heap out-of-bounds read that crashes the process. An unauthorized party who can supply crafted BSON input to an application using this API can cause a denial of service.

References

https://security-tracker.debian.org/tracker/CVE-2026-93395

Affected packages

Debian:12 / mongo-c-driver

Package

Name: mongo-c-driver
Purl: pkg:deb/debian/mongo-c-driver?arch=source&distro=bookworm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.23.1-1

1.23.1-1+deb12u1

1.23.1-1+deb12u2

1.23.1-1+deb12u3

1.24.1-1

1.24.2-1

1.24.3-1

1.24.4-1

1.25.0-1

1.25.1-1

1.25.2-1

1.25.4-1

1.25.4-1.1~exp1

1.26.0-1

1.26.0-1.1~exp1

1.26.0-1.1

1.26.1-1

1.26.2-1

1.27.0-1

1.27.1-1

1.27.2-1

1.27.3-1

1.27.4-1

1.27.5-1

1.27.6-1

1.28.0-1

1.28.1-1

1.29.0-1

1.29.1-1

1.29.2-1

1.30.0-1

1.30.1-1

1.30.2-1

1.30.3-1

1.30.4-1

2.*

2.0.2-1

2.1.0-1

2.1.1-1

2.1.2-1

2.2.0-1

2.2.1-1

2.2.2-1

2.2.3-1

2.2.4-1

2.3.0-1

2.3.1-1

2.3.2-1

2.3.3-1

2.4.0-1

2.5.0-1

2.5.1-1

2.5.2-1

2.5.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93395.json"

Debian:13 / mongo-c-driver

Package

Name: mongo-c-driver
Purl: pkg:deb/debian/mongo-c-driver?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.30.4-1

1.30.4-1+deb13u1

1.30.4-1+deb13u2

1.30.4-1+deb13u3

2.*

2.0.2-1

2.1.0-1

2.1.1-1

2.1.2-1

2.2.0-1

2.2.1-1

2.2.2-1

2.2.3-1

2.2.4-1

2.3.0-1

2.3.1-1

2.3.2-1

2.3.3-1

2.4.0-1

2.5.0-1

2.5.1-1

2.5.2-1

2.5.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93395.json"

Debian:14 / mongo-c-driver

Package

Name: mongo-c-driver
Purl: pkg:deb/debian/mongo-c-driver?arch=source&distro=forky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.4.0-1

Affected versions

1.*

1.30.4-1

2.*

2.0.2-1

2.1.0-1

2.1.1-1

2.1.2-1

2.2.0-1

2.2.1-1

2.2.2-1

2.2.3-1

2.2.4-1

2.3.0-1

2.3.1-1

2.3.2-1

2.3.3-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-93395.json"