Bug 2561965 (CVE-2026-117555)

Summary: CVE-2026-117555 cimg: cimg: Denial of Service via crafted BMP image
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
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Hardware: All   
OS: Linux   
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A flaw was found in cimg. An integer overflow vulnerability in the BMP image loader when calculating row dimensions can trigger an out-of-bounds memory read. An attacker can exploit this flaw by supplying a specially crafted BMP image file to an application using the library, potentially causing an application crash that results in a Denial of Service (DoS), or leaking sensitive heap memory contents into the decoded image.
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Description OSIDB Bzimport 2026-10-27 13:42:46 UTC 
CImg through 4.0.6 contains a heap out-of-bounds read vulnerability in the _load_bmp() function of CImg.h caused by an integer overflow in the row byte count. Attackers can supply a crafted BMP file with a large header width that wraps dx_bytes, causing crashes or heap memory disclosure into the decoded image.