Bug 2549725 (CVE-2026-109279)

Summary: CVE-2026-109279 ImageMagick: ImageMagick: Denial of Service via race condition during security policy access
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
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 ImageMagick. Due to improper synchronization during concurrent security policy access, simultaneous reads and writes across multiple threads can trigger a race condition, leading to a heap buffer overwrite. An attacker capable of inducing concurrent security policy operations can exploit this issue to crash the application, resulting in a Denial of Service (DoS).
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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: 2550280    
Bug Blocks:    

Description OSIDB Bzimport 2026-10-12 16:34:18 UTC 
ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper synchronization when the security policy is accessed, so simultaneous reads and writes of the policy by multiple threads trigger a race condition that causes a heap buffer over-write. An attacker able to induce concurrent security policy access can crash the application, causing a denial of service.