Bug 2561462 (CVE-2026-116724)

Summary: CVE-2026-116724 fltk: fltk: Arbitrary code execution via integer overflow in BMP image parsing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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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A flaw was found in FLTK. An attacker could achieve arbitrary code execution or cause a Denial of Service (DoS) by convincing a user to open a specially crafted BMP or ICO image file. Due to an integer overflow when calculating image dimensions, the application allocates an undersized memory buffer and writes data beyond its boundaries, leading to heap memory corruption.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-26 22:35:15 UTC
FLTK through 1.4.5 contains an integer overflow vulnerability in Fl_BMP_Image::load_bmp_() that causes undersized pixel buffer allocation from file-supplied width and height. Attackers can supply a crafted BMP or ICO file with large dimensions so row decoding writes file-derived data past the heap buffer, corrupting the application heap.