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author | Florian Dold <florian.dold@gmail.com> | 2020-04-24 13:50:05 +0530 |
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committer | Florian Dold <florian.dold@gmail.com> | 2020-04-24 13:50:12 +0530 |
commit | 892bd3c6013f0a8c44106f16299a34d9a1c99e48 (patch) | |
tree | 6faf04c507ca5e0737f2b1263ff5d11afd572723 /src/util | |
parent | 69f8fad56e942054bda1f7623de09c525c62b6c1 (diff) | |
download | gnunet-892bd3c6013f0a8c44106f16299a34d9a1c99e48.tar.gz gnunet-892bd3c6013f0a8c44106f16299a34d9a1c99e48.zip |
check for integer overflow in buffer lib (fixes #6217)
Diffstat (limited to 'src/util')
-rw-r--r-- | src/util/buffer.c | 2 |
1 files changed, 2 insertions, 0 deletions
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, | |||
56 | { | 56 | { |
57 | size_t new_capacity = buf->position + n; | 57 | size_t new_capacity = buf->position + n; |
58 | 58 | ||
59 | /* guard against overflow */ | ||
60 | GNUNET_assert (new_capacity >= buf->position); | ||
59 | if (new_capacity <= buf->capacity) | 61 | if (new_capacity <= buf->capacity) |
60 | return; | 62 | return; |
61 | /* warn if calculation of expected size was wrong */ | 63 | /* warn if calculation of expected size was wrong */ |