The searchmakenew function in evdns.c in libevent before 2.1.6-beta allows attackers to cause a denial of service (out-of-bounds read) via an empty hostname.
{
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"last_affected": "8.0"
}
],
"source": "CPE_FIELD",
"vendor_product": "debian:debian_linux"
},
{
"cpes": [
"cpe:2.3:a:libevent_project:libevent:*:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"last_affected": "2.1.5"
}
],
"source": "CPE_FIELD",
"vendor_product": "libevent_project:libevent"
}
]
}"2026-05-18T13:46:33Z"
[
{
"deprecated": false,
"signature_type": "Line",
"id": "CVE-2016-10197-b53ea4fd",
"signature_version": "v1",
"digest": {
"line_hashes": [
"214367120580076081898697868452724967811",
"164211120368855747282035090237193966170",
"292021247077176379054083257543566590152",
"112428809209276904449140038770404008020",
"215075892714760528797634730112271143100"
],
"threshold": 0.9
},
"source": "https://github.com/libevent/libevent/commit/ec65c42052d95d2c23d1d837136d1cf1d9ecef9e",
"target": {
"file": "evdns.c"
}
}
]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-10197.json"