In pfwritebuf of FuseDaemon.cpp, there is possible memory corruption due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"vanir_signatures": [
{
"digest": {
"length": 589.0,
"function_hash": "192019583326987785727405191115202404923"
},
"id": "ASB-A-192085766-555f3750",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Function",
"source": "https://android.googlesource.com/platform/packages/providers/MediaProvider/+/9b7488a6ab3f4c8f5cfc30ff7d04a972643c1ff9",
"target": {
"function": "pf_write_buf",
"file": "jni/FuseDaemon.cpp"
}
},
{
"digest": {
"threshold": 0.9,
"line_hashes": [
"63062175104087424415549573778864761467",
"231680940865405488345224561359528259172",
"273123602092719675722700568352747148168",
"29991220791276618583071092840987293896",
"196368252258504179421192806773538706037"
]
},
"id": "ASB-A-192085766-891c0d00",
"deprecated": false,
"signature_version": "v1",
"signature_type": "Line",
"source": "https://android.googlesource.com/platform/packages/providers/MediaProvider/+/9b7488a6ab3f4c8f5cfc30ff7d04a972643c1ff9",
"target": {
"file": "jni/FuseDaemon.cpp"
}
}
],
"fixes": [
"https://android.googlesource.com/platform/packages/providers/MediaProvider/+/9b7488a6ab3f4c8f5cfc30ff7d04a972643c1ff9"
],
"types": [
"EoP"
],
"spl": "2021-12-01",
"severity": "High"
}