Bug 2459242 (CVE-2026-28214)

Summary: CVE-2026-28214 Firebird: Firebird: Denial of Service via crafted Batch Parameter Block
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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 Firebird, an open-source relational database management system. An authenticated user with INSERT privileges on any table can exploit this vulnerability by sending a specially crafted Batch Parameter Block. This action causes an integer overflow in the `ClumpletReader::getClumpletSize()` function when processing a Wide type clumplet, leading to an infinite loop. The primary consequence is a Denial of Service (DoS) against the server, making it unavailable to legitimate users.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2459264, 2459265    
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Description OSIDB Bzimport 2026-04-17 19:01:26 UTC
Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the ClumpletReader::getClumpletSize() function can overflow the totalLength value when parsing a Wide type clumplet, causing an infinite loop. An authenticated user with INSERT privileges on any table can exploit this via a crafted Batch Parameter Block to cause a denial of service against the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.