From 70732ebb3cd1b847e72dce5ae8fe3c69580bd778 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Thu, 9 Feb 2023 10:25:59 +0100
Subject: [PATCH] intervals: fix crash when trying to remove element in empty
set
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2115627
Upstream Status: nftables commit 5357cb7b5cb93
commit 5357cb7b5cb93fc9b20d4d95b093d6b9f86b7727
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Thu Jun 23 14:20:17 2022 +0200
intervals: fix crash when trying to remove element in empty set
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>
Signed-off-by: Phil Sutter <psutter@redhat.com>
---
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
diff --git a/src/intervals.c b/src/intervals.c
index dcc06d1..c21b3ee 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 0000000..2960b69
--- /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
--
2.39.1