| Message ID | 20220623180951.86277-1-pablo@netfilter.org |
|---|---|
| State | Accepted |
| Delegated to: | Pablo Neira |
| Headers | show |
| Series | [nft,1/2] intervals: fix crash when trying to remove element in empty set | expand |
On Thu, Jun 23, 2022 at 08:09:50PM +0200, Pablo Neira Ayuso wrote:
> The set deletion routine expects an initialized set, otherwise it crashes.
This series are now in master.
diff --git a/src/intervals.c b/src/intervals.c index dcc06d18d594..c21b3ee0ad60 100644 --- a/src/intervals.c +++ b/src/intervals.c @@ -475,7 +475,11 @@ int set_delete(struct list_head *msgs, struct cmd *cmd, struct set *set, if (set->automerge) automerge_delete(msgs, set, init, debug_mask); - set_to_range(existing_set->init); + if (existing_set->init) { + set_to_range(existing_set->init); + } else { + existing_set->init = set_expr_alloc(&internal_location, set); + } list_splice_init(&init->expressions, &del_list); diff --git a/tests/shell/testcases/sets/errors_0 b/tests/shell/testcases/sets/errors_0 new file mode 100755 index 000000000000..2960b694c67c --- /dev/null +++ b/tests/shell/testcases/sets/errors_0 @@ -0,0 +1,14 @@ +#!/bin/bash + +set -e + +RULESET="table ip x { + set y { + type ipv4_addr + flags interval + } +} + +delete element ip x y { 2.3.4.5 }" + +$NFT -f - <<< $RULESET || exit 0
The set deletion routine expects an initialized set, otherwise it crashes. Fixes: 3e8d934e4f72 ("intervals: support to partial deletion with automerge") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> --- src/intervals.c | 6 +++++- tests/shell/testcases/sets/errors_0 | 14 ++++++++++++++ 2 files changed, 19 insertions(+), 1 deletion(-) create mode 100755 tests/shell/testcases/sets/errors_0