CVE-2023-45682 (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 read in `DECODE` macro when `var` is negative. As it can be seen in the definition of `DECODE_RAW` a negative `var` is a valid value. This issue may be used to leak internal memory allocation information.

cve decode definition file files information internal issue leak library macro may memory memory allocation mit ogg single trigger valid value var vorbis