By passing invalid javascript code where await and yield were called upon non-async and non-generator getter/setter functions, Hermes would invoke generator functions and error out on invalid await/yield positions. This could result in segmentation fault as a consequence of type confusion error, with a low chance of RCE. This issue affects Hermes versions prior to v0.10.0.
[
{
"product": "Hermes",
"vendor": "Facebook",
"versions": [
{
"lessThan": "unspecified",
"status": "unaffected",
"version": "0.10.0",
"versionType": "custom"
},
{
"lessThan": "0.10.0",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]