Bug 2458054 (CVE-2026-40183)

Summary: CVE-2026-40183 ImageMagick: Magick.NET: ImageMagick: Denial of Service via heap write overflow in JXL encoder
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
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in ImageMagick, a software for editing and manipulating digital images. When a user processes an image with the JXL encoder and specifies that it should be encoded as 16-bit floats, a heap write overflow occurs. This vulnerability could allow an attacker to cause a denial of service (DoS) by crashing the application.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2458058, 2458059    
Bug Blocks:    

Description OSIDB Bzimport 2026-04-13 22:02:19 UTC
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, the JXL encoder has an heap write overflow when a user specifies that the image should be encoded as 16 bit floats. This issue has been fixed in version 7.1.2-19.