Bug 2480209 (CVE-2026-9100)

Summary: CVE-2026-9100 mongo-c-driver: MongoDB C Driver: Memory corruption via malformed GridFS metadata
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the MongoDB C Driver's legacy GridFS API. This vulnerability allows an attacker to craft malicious documents in a GridFS collection. When an application reads these crafted files via the legacy API, it may either crash due to a division-by-zero error, leading to a Denial of Service (DoS), or silently leak process memory contents through an out-of-bounds read, resulting in information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2480379, 2480380    
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Description OSIDB Bzimport 2026-05-20 17:01:38 UTC
The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).