Fix buffer overflow while printing unhandled exception (#2710)

akosthekiss · robertsipka · commit 772a88050bfd · 2019-01-21T12:22:27.000+01:00
Fixes #2675 JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu
diff --git a/jerry-main/main-unix.c b/jerry-main/main-unix.c
@@ -210,7 +210,7 @@ print_unhandled_exception (jerry_value_t error_value) /**< error value */
         unsigned int pos = 0;
 
         /* 2. seek and print */
-        while (buffer[pos] != '\0')
+        while ((pos < JERRY_BUFFER_SIZE) && (buffer[pos] != '\0'))
         {
           if (buffer[pos] == '\n')
           {

Original file line number	Diff line number	Diff line change
`@@ -210,7 +210,7 @@ print_unhandled_exception (jerry_value_t error_value) /*< error value /`
`210`	`210`	`unsigned int pos = 0;`
`211`	`211`
`212`	`212`	`/* 2. seek and print */`
`213`		`- while (buffer[pos] != '\0')`
	`213`	`+ while ((pos < JERRY_BUFFER_SIZE) && (buffer[pos] != '\0'))`
`214`	`214`	`{`
`215`	`215`	`if (buffer[pos] == '\n')`
`216`	`216`	`{`