The issue was addressed with improved permissions logic. This issue is fixed in iOS 15.2 and iPadOS 15.2. A person with physical access to an iOS device may be able to access contacts from the lock screen.
[
{
"product": "iOS and iPadOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "15.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]