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Diffstat (limited to '')
| -rw-r--r-- | unmarshal.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/unmarshal.c b/unmarshal.c index 13a97ff..315d556 100644 --- a/unmarshal.c +++ b/unmarshal.c @@ -67,14 +67,19 @@ libsha2_unmarshal(struct libsha2_state *restrict state, const char *restrict buf return 0; } - if (bufsize - off < sizeof(state->chunk) + sizeof(size_t)) { + if (bufsize - off < sizeof(size_t)) { errno = EINVAL; return 0; } - memcpy(state->chunk, &buf[off], sizeof(state->chunk)); - off += sizeof(state->chunk); state->chunk_size = *(const size_t *)&buf[off]; off += sizeof(size_t); + if (bufsize - off < state->chunk_size) { + errno = EINVAL; + return 0; + } + memcpy(state->chunk, &buf[off], state->chunk_size); + off += state->chunk_size; + return off; } |