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6lo: Avoid null ptr dereference when DAC=1, DAM=00, M=1

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Joakim Nohlgård 2017-04-02 18:40:58 +02:00
parent 0fd85f982d
commit 0ba9fd3456
1 changed files with 1 additions and 1 deletions
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2
sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c
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@ -367,7 +367,7 @@ size_t gnrc_sixlowpan_iphc_decode(gnrc_pktsnip_t **dec_hdr, gnrc_pktsnip_t *pkt,
dci = iphc_hdr[CID_EXT_IDX] & 0x0f;
}
if (iphc_hdr[IPHC2_IDX] & SIXLOWPAN_IPHC2_DAM) {
if (iphc_hdr[IPHC2_IDX] & (SIXLOWPAN_IPHC2_M | SIXLOWPAN_IPHC2_DAM)) {
ctx = gnrc_sixlowpan_ctx_lookup_id(dci);
if (ctx == NULL) {