The III_i_stereo function in layer3.c in mpglib, as used in libmpgdecoder.a in LAME 3.99.5 and other products, allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted audio file.
https://blogs.gentoo.org/ago/2017/06/17/lame-stack-based-buffer-overflow-in-iii_i_stereo-layer3-c/