There is an illegal address access in the build_table function in libavcodec/bitstream.c of Libav 12.1 that will lead to remote denial of service via crafted input.
{
"source": "CPE_FIELD",
"cpe": "cpe:2.3:a:libav:libav:12.1:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "12.1"
}
]
}