A privacy issue existed in motion sensor calibration. This issue was addressed with improved motion sensor processing. This issue is fixed in iOS 12.2, watchOS 5.2. A malicious app may be able to track users between installs.
[
{
"product": "iOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "iOS 12.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "watchOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "watchOS 5.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]