From 892bd3c6013f0a8c44106f16299a34d9a1c99e48 Mon Sep 17 00:00:00 2001 From: Florian Dold Date: Fri, 24 Apr 2020 13:50:05 +0530 Subject: [PATCH] check for integer overflow in buffer lib (fixes #6217) --- src/util/buffer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/util/buffer.c b/src/util/buffer.c index 8efb3e284..dabf630c7 100644 --- a/src/util/buffer.c +++ b/src/util/buffer.c @@ -56,6 +56,8 @@ GNUNET_buffer_ensure_remaining (struct GNUNET_Buffer *buf, { size_t new_capacity = buf->position + n; + /* guard against overflow */ + GNUNET_assert (new_capacity >= buf->position); if (new_capacity <= buf->capacity) return; /* warn if calculation of expected size was wrong */ -- 2.25.1