Bug 2540837 (CVE-2026-88387)

Summary: CVE-2026-88387 LibRaw: LibRaw: Denial of Service via improper numeric conversion
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: 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 LibRaw. A remote attacker can exploit this vulnerability by supplying a specially crafted image file containing an out-of-range metadata value. Due to improper range validation during numeric conversion in the parse_tiff_ifd() function, processing the malformed file triggers an application crash, 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: 2540965, 2540966    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-24 20:52:34 UTC 
LibRaw 0.22.0 contains an incorrect numeric conversion vulnerability in LibRaw::parse_tiff_ifd() when processing TIFF tag 0x00fe (NewSubfileType). A specially crafted RAW, TIFF, or DNG file can supply an attacker-controlled NewSubfileType value outside the range of a signed int. The parser converts this value and narrows it to int without performing range validation. This out-of-range conversion triggers undefined behavior, resulting in process termination and denial of service.