Assuming EL1 is compromised, an improper address validation in RKP prior to SMR JUN-2021 Release 1 allows local attackers to remap EL2 memory as writable.
[
{
"product": "Samsung Mobile Devices",
"vendor": "Samsung Mobile",
"versions": [
{
"lessThan": "SMA JUN-2021 Release 1",
"status": "affected",
"version": "Q(10.0), R(11.0) devices with Exynos9610, 9810, 9820, 9830",
"versionType": "custom"
}
]
}
]