diff options
| author | Alexander Couzens <lynxis@fe80.eu> | 2021-02-03 11:53:11 +0100 |
|---|---|---|
| committer | Alexander Couzens <lynxis@fe80.eu> | 2021-02-03 14:37:54 +0100 |
| commit | dc43f7d3c73dc4cbe4e94668c635f056756f6d8a (patch) | |
| tree | 7ee9b24bd7d933e481d3d781a0e0a40957cc1789 | |
| parent | 47ed2a6b4a83db4525dd792fbe430a91479efd1c (diff) | |
gprs_ns2_frgre: check iph/ip6h before passing them to rx functions
With IPv4 and IPv6 support it's not guaranteed that iph/ip6h is valid.
Related CID#214288
Change-Id: If9015906917e3ad11d14b84c29d64f28a3158144
| -rw-r--r-- | src/gb/gprs_ns2_frgre.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/gb/gprs_ns2_frgre.c b/src/gb/gprs_ns2_frgre.c index f163704e..177aeb20 100644 --- a/src/gb/gprs_ns2_frgre.c +++ b/src/gb/gprs_ns2_frgre.c @@ -351,11 +351,17 @@ static struct msgb *read_nsfrgre_msg(struct osmo_fd *bfd, int *error, switch (osmo_ntohs(greh->ptype)) { case GRE_PTYPE_IPv4: /* IPv4 messages might be GRE keepalives */ - *error = handle_rx_gre_ipv4(bfd, msg, iph, greh); + if (iph) + *error = handle_rx_gre_ipv4(bfd, msg, iph, greh); + else + *error = -EIO; goto out_err; break; case GRE_PTYPE_IPv6: - *error = handle_rx_gre_ipv6(bfd, msg, ip6h, greh); + if (ip6h) + *error = handle_rx_gre_ipv6(bfd, msg, ip6h, greh); + else + *error = -EIO; goto out_err; break; case GRE_PTYPE_FR: |