flbgzipcompress in flb_gzip.c in Fluent Bit before 1.6.4 has an out-of-bounds write because it does not use the correct calculation of the maximum gzip data-size expansion.
{
"cpes": [
"cpe:2.3:a:treasuredata:fluent_bit:*:*:*:*:*:*:*:*"
],
"severity": "High"
}