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Bug 1743515 - Add dynamic check for valid serialized length. r=jonco, a=RyanVM

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roytam1 2022-01-19 10:08:08 +08:00
commit 2ceec8871e
1 changed files with 5 additions and 0 deletions
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5
js/src/vm/StructuredClone.cpp
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@ -545,6 +545,11 @@ ReadStructuredClone(JSContext* cx, JSStructuredCloneData& data,
JS::StructuredCloneScope scope, MutableHandleValue vp, JS::StructuredCloneScope scope, MutableHandleValue vp,
const JSStructuredCloneCallbacks* cb, void* cbClosure) const JSStructuredCloneCallbacks* cb, void* cbClosure)
{ {
if (data.Size() % 8) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr,
JSMSG_SC_BAD_SERIALIZED_DATA, "misaligned");
return false;
}
SCInput in(cx, data); SCInput in(cx, data);
JSStructuredCloneReader r(in, scope, cb, cbClosure); JSStructuredCloneReader r(in, scope, cb, cbClosure);
return r.read(vp); return r.read(vp);