From cebbedd238501d7f4326b0494cd60208a92e1645 Mon Sep 17 00:00:00 2001
From: van Hauser <vh@thc.org>
Date: Wed, 9 Dec 2020 08:58:07 +0100
Subject: fix cmin/tmin potential overflow on too large files

---
 src/afl-forkserver.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src')

diff --git a/src/afl-forkserver.c b/src/afl-forkserver.c
index 5a8e56b2..3afb94be 100644
--- a/src/afl-forkserver.c
+++ b/src/afl-forkserver.c
@@ -960,6 +960,8 @@ void afl_fsrv_write_to_testcase(afl_forkserver_t *fsrv, u8 *buf, size_t len) {
 
   if (fsrv->shmem_fuzz) {
 
+    if (unlikely(len > MAX_FILE)) len = MAX_FILE;
+
     *fsrv->shmem_fuzz_len = len;
     memcpy(fsrv->shmem_fuzz, buf, len);
 #ifdef _DEBUG
-- 
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