Bug 2515434 (CVE-2026-73515)

Summary: CVE-2026-73515 postgis: PostGIS: Memory Disclosure and Denial of Service via Malformed FlatGeobuf Buffer
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in PostGIS. This out-of-bounds read vulnerability allows a remote attacker to cause memory disclosure or a server crash. This occurs when a malformed FlatGeobuf buffer is supplied, as the FlatGeobuf property metadata decoder fails to verify that the string body is contained within the buffer. This can lead to sensitive information disclosure or a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2520304, 2520305, 2520306, 2520307    
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Description OSIDB Bzimport 2026-08-13 16:26:36 UTC 
PostGIS before 3.7.0beta2 contains an out-of-bounds read vulnerability that allows attackers to cause memory disclosure or a server crash by supplying a malformed FlatGeobuf buffer. The FlatGeobuf property metadata decoder verifies that a string length field is present but fails to verify that the subsequent string body is contained within the supplied buffer before materializing it into a SQL-visible value, enabling memory disclosure or denial of service.