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CVE-2026-21413 is a heap-based buffer overflow in LibRaw's lossless_jpeg_load_raw() functionality, reported against commits 0b56545 and d20315b. The vulnerable code path is used when LibRaw decodes lossless JPEG data embedded in certain RAW image formats, with Canon CR2 specifically identified as a predominant affected format. According to the provided sources, a specially crafted malicious image file can trigger improper array index validation during parsing/decoding, resulting in a heap buffer overflow and memory corruption in the consuming application.
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A heap-based buffer overflow vulnerability in LibRaw that can be triggered by a specially crafted malicious file.
A heap-based buffer overflow in the lossless_jpeg_load_raw functionality of LibRaw affecting Commit 0b56545 and Commit d20315b, triggerable via a specially crafted malicious file.
A critical heap-based buffer overflow in LibRaw's lossless_jpeg_load_raw() function that can allow unauthenticated remote code execution when parsing malicious RAW image files, especially Canon CR2 files.
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Cross-references every affected SKU, including bundled OEM variants.
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