diff options
author | Phil Sutter <phil@nwl.cc> | 2018-03-19 18:02:05 +0100 |
---|---|---|
committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2018-03-20 13:07:39 +0100 |
commit | 4be0a3f922a2944a941316fad76a717cd46691bd (patch) | |
tree | cceb7cad3d8ed92d580891b9d411d23fc8077b9d /src/expression.c | |
parent | a55d79aa68266c790f3767ba240c3bdee247d511 (diff) |
flowtable: Make parsing a little more robust
It was surprisingly easy to crash nft with invalid syntax in 'add
flowtable' command. Catch at least three possible ways (illustrated in
provided test case) by making evaluation phase survive so that bison
gets a chance to complain.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'src/expression.c')
-rw-r--r-- | src/expression.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/expression.c b/src/expression.c index 5f023d2a..e698b14c 100644 --- a/src/expression.c +++ b/src/expression.c @@ -65,7 +65,7 @@ void expr_free(struct expr *expr) return; if (--expr->refcnt > 0) return; - if (expr->ops->destroy) + if (expr->ops && expr->ops->destroy) expr->ops->destroy(expr); xfree(expr); } |