From 3600a926dfefdf8fce9e464ff238b70e64ceb938 Mon Sep 17 00:00:00 2001
From: Rob Walker <rob@solana.com>
Date: Wed, 19 Jun 2019 21:29:36 -0700
Subject: [PATCH] protect against corruption (#4741)

---
 sdk/src/account.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sdk/src/account.rs b/sdk/src/account.rs
index b24a3f1180..898c670895 100644
--- a/sdk/src/account.rs
+++ b/sdk/src/account.rs
@@ -65,6 +65,9 @@ impl Account {
     }
 
     pub fn serialize_data<T: serde::Serialize>(&mut self, state: &T) -> Result<(), bincode::Error> {
+        if bincode::serialized_size(state)? > self.data.len() as u64 {
+            return Err(Box::new(bincode::ErrorKind::SizeLimit));
+        }
         bincode::serialize_into(&mut self.data[..], state)
     }
 }