ECHO-DDB8-C818-EDCA Vulnerable code is not present in libraw 0.21.4 (the version shipped in Debian trixie). The CVE describes a heap out-of-bounds write in HuffTable::initval (src/decompressors/losslessjpeg.cpp), reachable via LibRaw::sony_ycbcr_load_raw -> LibRaw_LjpegDecompressor::initialize -> HuffTable::initval. None of those symbols exist in 0.21.4: the src/decompressors/ directory, the LibRaw_LjpegDecompressor class, and the sony_ycbcr_load_raw entry point were all introduced together in libraw 0.22.0. Empirically confirmed by running the public PoC from https://github.com/biniamf/pocs/tree/main/libraw_lljpeg against an ASan build of unpatched libraw 0.21.4: the file is rejected at open with "Unsupported file format or not RAW file"; the same PoC reproduces the heap-buffer-overflow in 0.22.0 with the stack trace from the Talos report.