An issue was discovered in Pillow before 8.1.1. In TiffDecode.c, there is a negative-offset memcpy with an invalid size.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "8.1.1"
},
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
}