Bug 2499008 (CVE-2026-56373)

Summary: CVE-2026-56373 ImageMagick: ImageMagick: Use-after-free vulnerability in PDB decoder allows denial of service or limited data corruption.
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: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in ImageMagick. This use-after-free vulnerability (CWE-416) exists within the PDB (Program Database) decoder. A remote attacker could exploit this by tricking a user into processing a specially crafted malicious PDB file. This could lead to a denial of service (DoS) due to application crashes or potentially allow for a single zero-byte write to freed memory, resulting in limited data corruption.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2499347, 2499348    
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Description OSIDB Bzimport 2026-07-10 15:01:56 UTC
ImageMagick before 7.1.2-15 contains a use-after-free vulnerability in the PDB decoder that uses a stale pointer when memory allocation fails. Attackers can trigger this vulnerability by processing malicious PDB files to cause crashes or write a single zero byte to freed memory.