Bug 2520797 (CVE-2026-69242)

Summary: CVE-2026-69242 libvips: libvips: Integer overflow leads to heap buffer overflow and arbitrary memory access
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in libvips. A crafted many-band TIFF image, when processed by libvips, can bypass scanline validation and trigger an integer overflow. This overflow leads to a heap buffer overflow, allowing an attacker to access arbitrary memory locations with negative offsets. This can result in the disclosure of sensitive image data, corruption of other data, and likely application crashes. While not yet demonstrated, remote code execution cannot be ruled out.
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Bug Depends On: 2526136, 2526137    
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Description OSIDB Bzimport 2026-08-20 21:47:44 UTC 
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, a crafted many-band TIFF processed through VipsForeignLoadTiff can evade scanline validation in libvips/iofuncs/image.c and cause an integer overflow in vips_image_sanity. The resulting buffer-region calculation can access attacker-controlled negative offsets in mmap-resident allocations, allowing reads or writes of other image data, possible data disclosure through uncompressed .v output, and likely process crashes. Remote code execution has not been demonstrated but cannot be ruled out. This issue is fixed in version 8.18.3.