CVE-2020-15503: Debian Linux

High severity, CVSS 7.5. EPSS: 3.7% chance of exploitation in the next 30 days.

LibRaw before 0.20-RC1 lacks a thumbnail size range check. This affects decoders/unpack_thumb.cpp, postprocessing/mem_image.cpp, and utils/thumb_utils.cpp. For example, malloc(sizeof(libraw_processed_image_t)+T.tlength) occurs without validating T.tlength.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 31 only; version 32 only
• Libraw Libraw: up to and including 0.19.5; version 0.20 only

Published 2020-07-02. Last modified 2026-06-17.