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cve/2021/CVE-2021-42716.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
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CVE-2021-42716

Description

An issue was discovered in stb stb_image.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stb_image, or read up to 1024 bytes of non-consecutive heap data without control over the read location.

POC

Reference

Github

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