|
|
Minimal reproducer:
```
$ cat nft.ruleset
# filters
table inet filter {
chain prerouting {
type filter hook prerouting priority -50
}
}
# dump new state
list ruleset
$ nft -c -f ./nft.ruleset
table inet filter {
chain prerouting {
Segmentation fault (core dumped)
```
The crash happens in `chain_print_declaration()`:
```
if (chain->flags & CHAIN_F_BASECHAIN) {
mpz_export_data(&policy, chain->policy->value,
BYTEORDER_HOST_ENDIAN, sizeof(int));
```
Here `chain->policy` is `NULL` (as textual rule does not mention it).
The change is not to print the policy if it's not set
(similar to `chain_evaluate()` handling).
CC: Florian Westphal <fw@strlen.de>
CC: Pablo Neira Ayuso <pablo@netfilter.org>
CC: netfilter-devel@vger.kernel.org
Bug: https://bugzilla.netfilter.org/show_bug.cgi?id=1365
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Acked-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
|
