A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using alarm() and siglongjmp(). When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.
{
"unresolved_ranges": [
{
"source": "CPE_FIELD",
"extracted_events": [
{
"introduced": "11.0"
},
{
"fixed": "11.7.9"
},
{
"introduced": "12.0"
},
{
"fixed": "12.6.8"
},
{
"introduced": "13.0"
},
{
"fixed": "13.5"
}
],
"cpe": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*"
}
]
}