CVE-2023-45676 (stb_vorbis.c)

stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[i] = get8_packet(f);`. The root cause is an integer overflow in `setup_malloc`. A sufficiently large value in the variable `sz` overflows with `sz+7` in and the negative value passes the maximum available memory buffer check. This issue may lead to code execution.

buffer check cve file files integer integer overflow large library may memory mit ogg overflow root single trigger value variable vendor vorbis