In pf_write_buf 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.
{
"fixes": [
"https://android.googlesource.com/platform/packages/providers/MediaProvider/+/9b7488a6ab3f4c8f5cfc30ff7d04a972643c1ff9"
],
"severity": "High",
"spl": "2021-12-01",
"types": [
"EoP"
],
"vanir_signatures": [
{
"deprecated": false,
"digest": {
"function_hash": "192019583326987785727405191115202404923",
"length": 589
},
"id": "ASB-A-192085766-555f3750",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://android.googlesource.com/platform/packages/providers/MediaProvider/+/9b7488a6ab3f4c8f5cfc30ff7d04a972643c1ff9",
"target": {
"file": "jni/FuseDaemon.cpp",
"function": "pf_write_buf"
}
},
{
"deprecated": false,
"digest": {
"line_hashes": [
"63062175104087424415549573778864761467",
"231680940865405488345224561359528259172",
"273123602092719675722700568352747148168",
"29991220791276618583071092840987293896",
"196368252258504179421192806773538706037"
],
"threshold": 0.9
},
"id": "ASB-A-192085766-891c0d00",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://android.googlesource.com/platform/packages/providers/MediaProvider/+/9b7488a6ab3f4c8f5cfc30ff7d04a972643c1ff9",
"target": {
"file": "jni/FuseDaemon.cpp"
}
}
]
}