In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash. This was addressed in epan/tvbuff_zlib.c by rejecting negative lengths to avoid a buffer over-read.
{
"versions": [
{
"introduced": "2.2.0"
},
{
"last_affected": "2.2.15"
},
{
"introduced": "2.4.0"
},
{
"last_affected": "2.4.7"
},
{
"introduced": "2.6.0"
},
{
"last_affected": "2.6.1"
}
]
}