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Merge pull request #20309 from jia200x/pr/fix_tnt_loopback

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gnrc_ipv6: fix double-free when pinging TNT loopback address
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benpicco 2024-01-30 11:54:48 +00:00 committed by GitHub
commit 7c8c522a73
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1 changed files with 7 additions and 3 deletions
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10
sys/net/gnrc/network_layer/ipv6/gnrc_ipv6.c
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@ -634,9 +634,13 @@ static void _send_multicast(gnrc_pktsnip_t *pkt, bool prep_hdr,
static void _send_to_self(gnrc_pktsnip_t *pkt, bool prep_hdr,
gnrc_netif_t *netif)
{
if (!_safe_fill_ipv6_hdr(netif, pkt, prep_hdr) ||
/* no netif header so we just merge the whole packet. */
(gnrc_pktbuf_merge(pkt) != 0)) {
/* _safe_fill_ipv6_hdr releases pkt on error */
if (!_safe_fill_ipv6_hdr(netif, pkt, prep_hdr)) {
DEBUG("ipv6: error looping packet to sender.\n");
return;
}
/* no netif header so we just merge the whole packet. */
else if (gnrc_pktbuf_merge(pkt) != 0) {
DEBUG("ipv6: error looping packet to sender.\n");
gnrc_pktbuf_release(pkt);
return;