Bug 2459244 (CVE-2026-28224)

Summary:	CVE-2026-28224 Firebird: Firebird: Denial of Service due to null pointer dereference from unauthenticated packet
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	Keywords:	Security
Target Milestone:	---
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Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in Firebird. An unauthenticated attacker can exploit this vulnerability by sending a specific network packet to the server without prior authentication. This action triggers a null pointer dereference, causing the Firebird database server to crash. The primary consequence is a Denial of Service (DoS), making the database unavailable.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2459259, 2459260
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Description OSIDB Bzimport 2026-04-17 19:01:35 UTC

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler is not initialized, resulting in a null pointer dereference and server crash. An unauthenticated attacker who knows only the server's IP and port can exploit this to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.