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cve 2023 2804

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CVE-2023-2804 is a heap-based buffer overflow vulnerability in libjpeg-turbo's merged upsampling code, specifically affecting 12-bit JPEG support. The flaw resides in the h2v2_merged_upsample_internal() function in jdmrgext.c, where unchecked sample values can cause out-of-bounds heap access when processing specially crafted 12-bit lossless JPEG images. This can lead to crashes or memory corruption, posing risks across desktop, server, and embedded systems. Discussions on WindowsForum cover the technical details of the vulnerability and provide patch guidance for mitigation. Users are advised to update libjpeg-turbo to version 3.0 or later to address this issue.
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    CVE-2023-2804: 12-bit JPEG heap overflow in libjpeg-turbo and patch guidance

    A heap‑based buffer overflow in libjpeg‑turbo’s merged upsampling code — tracked as CVE‑2023‑2804 — remains a practical reminder that long‑tail, niche JPEG features can produce high‑impact crashes and information‑security headaches across desktop, server and embedded ecosystems. The flaw is...
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    • cve 2023 2804 heap overflow libjpeg turbo twelve bit jpeg
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