CVE-2023-45676: Nothings Stb Vorbis.c

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Nothings Stb Vorbis.c: version 1.22 only

Published 2023-10-21. Last modified 2026-06-17.