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Backport from minidriver: 11788a4a36bf83a01104700f171774336086e9b4

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commit 11788a4a36bf83a01104700f171774336086e9b4
Author: Dave Pate <dpate@yubico.com>
Date:   Tue Jul 18 18:28:48 2017 -0700

    Fixes #114 - jump to cleanup section in ykpiv_util_write_mscmap on invalid size
This commit is contained in:
Trevor Bentley
2017-08-07 15:34:45 +02:00
parent 16d0a519c4
commit 06f2e777ba
1 changed files with 10 additions and 7 deletions
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lib/util.c
+4 -1
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@@ -469,7 +469,10 @@ ykpiv_rc ykpiv_util_write_mscmap(ykpiv_state *state, ykpiv_container *containers
// calculate the required length of the encoded object // calculate the required length of the encoded object
req_len = 1 /* data tag */ + _ykpiv_set_length(buf, data_len) + data_len; req_len = 1 /* data tag */ + _ykpiv_set_length(buf, data_len) + data_len;
if (req_len > _obj_size_max(state)) return YKPIV_SIZE_ERROR; if (req_len > _obj_size_max(state)) {
res = YKPIV_SIZE_ERROR;
goto Cleanup;
}
buf[offset++] = TAG_MSCMAP; buf[offset++] = TAG_MSCMAP;
offset += _ykpiv_set_length(buf + offset, data_len); offset += _ykpiv_set_length(buf + offset, data_len);