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nat: Compare the DTAP L3 size with the size of the msgb - dtap header

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Holger Hans Peter Freyther
2012-01-10 22:27:43 +01:00
parent 8c36fdb1d8
commit c2c0ea700b
1 changed files with 4 additions and 2 deletions
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6
openbsc/src/osmo-bsc_nat/bsc_nat_utils.c
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@@ -635,8 +635,10 @@ struct gsm48_hdr *bsc_unpack_dtap(struct bsc_nat_parsed *parsed,
return NULL;
}
if (*len < sizeof(struct gsm48_hdr)) {
LOGP(DNAT, LOGL_ERROR, "GSM48 header does not fit.\n");
if (msgb_l3len(msg) - 3 < msg->l3h[2]) {
LOGP(DNAT, LOGL_ERROR,
"GSM48 payload does not fit: %d %d\n",
msg->l3h[2], msgb_l3len(msg) - 3);
return NULL;
}