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check index before accessing imports.globals

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This commit is contained in:
Patrick Ventuzelo
2019-09-18 10:28:49 +02:00
parent 174cc9f0ec
commit 315b87c718
1 changed files with 20 additions and 0 deletions
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20
lib/runtime-core/src/backing.rs
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@ -149,6 +149,11 @@ impl LocalBacking {
}]); }]);
} }
Initializer::GetGlobal(import_global_index) => { Initializer::GetGlobal(import_global_index) => {
if import_global_index.index() >= imports.globals.len() {
return Err(vec![LinkError::Generic {
message: "incorrect global index for initializer".to_string(),
}]);
}
if let Value::I32(x) = imports.globals[import_global_index].get() { if let Value::I32(x) = imports.globals[import_global_index].get() {
x as u32 x as u32
} else { } else {
@ -205,6 +210,11 @@ impl LocalBacking {
}]); }]);
} }
Initializer::GetGlobal(import_global_index) => { Initializer::GetGlobal(import_global_index) => {
if import_global_index.index() >= imports.globals.len() {
return Err(vec![LinkError::Generic {
message: "incorrect global index for initializer".to_string(),
}]);
}
if let Value::I32(x) = imports.globals[import_global_index].get() { if let Value::I32(x) = imports.globals[import_global_index].get() {
x as u32 x as u32
} else { } else {
@ -273,6 +283,11 @@ impl LocalBacking {
}]); }]);
} }
Initializer::GetGlobal(import_global_index) => { Initializer::GetGlobal(import_global_index) => {
if import_global_index.index() >= imports.globals.len() {
return Err(vec![LinkError::Generic {
message: "incorrect global index for initializer".to_string(),
}]);
}
if let Value::I32(x) = imports.globals[import_global_index].get() { if let Value::I32(x) = imports.globals[import_global_index].get() {
x as u32 x as u32
} else { } else {
@ -326,6 +341,11 @@ impl LocalBacking {
}]); }]);
} }
Initializer::GetGlobal(import_global_index) => { Initializer::GetGlobal(import_global_index) => {
if import_global_index.index() >= imports.globals.len() {
return Err(vec![LinkError::Generic {
message: "incorrect global index for initializer".to_string(),
}]);
}
if let Value::I32(x) = imports.globals[import_global_index].get() { if let Value::I32(x) = imports.globals[import_global_index].get() {
x as u32 x as u32
} else { } else {