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Description
A NULL pointer dereference in GPAC MP4Box: when parsing certain truncated MP4 files, an unknown/invalid stsd entry can result in missing descriptor fields (e.g., codec/mime/profile strings). gf_media_map_esd then calls strlen() on a NULL pointer, triggering a crash (ASan SEGV).
References
github.com/gpac/gpac/issues/3345
github.com/...gf_media_map_esd_media_tools_isom_tools_c_1364
infosec.exchange/@sigdevel/116624563750949972