diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
index c7dc47532e2d..6ff0ae1b231e 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -4671,7 +4671,7 @@ INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode,
             __sanitizer_FILE *fp) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp);
-  COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
+  if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
   COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
   __sanitizer_FILE *res = REAL(freopen)(path, mode, fp);
@@ -4702,7 +4702,7 @@ INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode,
             __sanitizer_FILE *fp) {
   void *ctx;
   COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp);
-  COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
+  if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1);
   COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1);
   COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp);
   __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp);
diff --git a/compiler-rt/test/asan/TestCases/Posix/freopen.cc b/compiler-rt/test/asan/TestCases/Posix/freopen.cc
new file mode 100644
index 000000000000..d2cd853387fb
--- /dev/null
+++ b/compiler-rt/test/asan/TestCases/Posix/freopen.cc
@@ -0,0 +1,12 @@
+// RUN: %clangxx_asan -O0 %s -o %t && %run %t
+
+#include <assert.h>
+#include <stdio.h>
+
+int main() {
+  FILE *fp = fopen("/dev/null", "w");
+  assert(fp);
+  freopen(NULL, "a", fp);
+  fclose(fp);
+  return 0;
+}