{"schemaVersion":3,"id":"CVE-2026-49295","aliases":["UBUNTU-CVE-2026-49295","DEBIAN-CVE-2026-49295"],"status":"published","duplicateOf":null,"title":null,"description":"libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.20, a crafted H.265 bitstream can cause an out-of-bounds array write in `decoder_context::process_reference_picture_set()` (`libde265/decctx.cc:1376`). The root cause is a missing aggregate bound check on predicted short-term reference picture set entries. Individual list sizes are validated, but the combined count after predicted RPS construction can exceed the 16-entry `PocStFoll` array, writing at index 16. 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