stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger memory allocation failure in start_decoder. In that case the function returns early, the f->comment_list is set to NULL, but f->comment_list_length is not reset. Later in vorbis_deinit it tries to dereference the NULL pointer. This issue may lead to denial of service.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Stb_vorbis.c | Nothings | 1.22 (including) | 1.22 (including) |
| Libstb | Ubuntu | bionic | * |
| Libstb | Ubuntu | lunar | * |
| Libstb | Ubuntu | mantic | * |
| Libstb | Ubuntu | trusty | * |
| Libstb | Ubuntu | xenial | * |