Bug 2520798 (CVE-2026-70653)

Summary: CVE-2026-70653 libvips: libvips: Information disclosure via heap-based buffer read overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in libvips. A heap-based buffer read overflow vulnerability exists in the old-style Radiance RLE decoder. A remote attacker could exploit this by providing a specially crafted Radiance image. This could lead to the disclosure of four bytes of adjacent heap data, potentially revealing sensitive image information.
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Description OSIDB Bzimport 2026-08-20 21:47:48 UTC 
libvips is a fast image processing library with low memory needs. Prior to version 8.18.3, the old-style Radiance RLE decoder in libvips/foreign/radiance.c can process a repeat marker at the beginning of a scanline in scanline_read_old and read q[-1] before any prior pixel exists. A crafted Radiance image loaded through VipsForeignLoadRad can therefore disclose four bytes of adjacent heap data, most likely other image data. This issue is fixed in version 8.18.3.