diff --git a/Changelog.md b/Changelog.md
index cedb58591..6bf998b5d 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -13,6 +13,7 @@ Features:
  * Type checker: Warn when existing symbols, including builtins, are overwritten.
 
 Bugfixes:
+ * Code Generator: Properly clear return memory area for ecrecover.
  * Type Checker: Fix crash for some assignment to non-lvalue.
  * Type Checker: Fix invalid "specify storage keyword" warning for reference members of structs.
  * Type Checker: Mark modifiers as internal.
diff --git a/docs/bugs.json b/docs/bugs.json
index a0c0e7c43..4fd73492d 100644
--- a/docs/bugs.json
+++ b/docs/bugs.json
@@ -1,4 +1,11 @@
 [
+    {
+        "name": "ECRecoverMalformedInput",
+	"summary": "The ecrecover() builtin can return garbage for malformed input.",
+        "description": "The ecrecover precompile does not properly signal failure for malformed input (especially in the 'v' argument) and thus the Solidity function can return data that was previously present in the return area in memory.",
+        "fixed": "0.4.14",
+        "severity": "medium"
+    },
     {
         "name": "SkipEmptyStringLiteral",
 	"summary": "If \"\" is used in a function call, the following function arguments will not be correctly passed to the function.",
@@ -107,4 +114,4 @@
         "severity": "high",
         "fixed": "0.3.0"
     }
-]
\ No newline at end of file
+]
diff --git a/docs/bugs_by_version.json b/docs/bugs_by_version.json
index d6802eec3..e67a08453 100644
--- a/docs/bugs_by_version.json
+++ b/docs/bugs_by_version.json
@@ -1,6 +1,7 @@
 {
     "0.1.0": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -16,6 +17,7 @@
     }, 
     "0.1.1": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -31,6 +33,7 @@
     }, 
     "0.1.2": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -46,6 +49,7 @@
     }, 
     "0.1.3": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -61,6 +65,7 @@
     }, 
     "0.1.4": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -76,6 +81,7 @@
     }, 
     "0.1.5": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -91,6 +97,7 @@
     }, 
     "0.1.6": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -107,6 +114,7 @@
     }, 
     "0.1.7": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -123,6 +131,7 @@
     }, 
     "0.2.0": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -139,6 +148,7 @@
     }, 
     "0.2.1": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -155,6 +165,7 @@
     }, 
     "0.2.2": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -171,6 +182,7 @@
     }, 
     "0.3.0": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -186,6 +198,7 @@
     }, 
     "0.3.1": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -200,6 +213,7 @@
     }, 
     "0.3.2": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -214,6 +228,7 @@
     }, 
     "0.3.3": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -227,6 +242,7 @@
     }, 
     "0.3.4": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -240,6 +256,7 @@
     }, 
     "0.3.5": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -253,6 +270,7 @@
     }, 
     "0.3.6": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -264,6 +282,7 @@
     }, 
     "0.4.0": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -275,6 +294,7 @@
     }, 
     "0.4.1": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -286,6 +306,7 @@
     }, 
     "0.4.10": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction"
         ], 
@@ -293,20 +314,26 @@
     }, 
     "0.4.11": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral"
         ], 
         "released": "2017-05-03"
     }, 
     "0.4.12": {
-        "bugs": [], 
+        "bugs": [
+            "ECRecoverMalformedInput"
+        ], 
         "released": "2017-07-03"
     }, 
     "0.4.13": {
-        "bugs": [], 
+        "bugs": [
+            "ECRecoverMalformedInput"
+        ], 
         "released": "2017-07-06"
     }, 
     "0.4.2": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -317,6 +344,7 @@
     }, 
     "0.4.3": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -326,6 +354,7 @@
     }, 
     "0.4.4": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored"
@@ -334,6 +363,7 @@
     }, 
     "0.4.5": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored", 
@@ -343,6 +373,7 @@
     }, 
     "0.4.6": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction", 
             "IdentityPrecompileReturnIgnored"
@@ -351,6 +382,7 @@
     }, 
     "0.4.7": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction"
         ], 
@@ -358,6 +390,7 @@
     }, 
     "0.4.8": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction"
         ], 
@@ -365,6 +398,7 @@
     }, 
     "0.4.9": {
         "bugs": [
+            "ECRecoverMalformedInput", 
             "SkipEmptyStringLiteral", 
             "ConstantOptimizerSubtraction"
         ],