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From 51bbb027e93637f5821215ebb067454ad6620190 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
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Date: Tue, 10 May 2022 10:51:43 +0200
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Subject: [PATCH] shared/json: fix memleak in sort
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(cherry picked from commit 99b1145aae682ddd7554c7e3ac5ebf778e88f87d)
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Related: #2087652
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---
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 src/shared/json.c             | 4 ++--
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 test/fuzz/fuzz-json/leak-sort | 1 +
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 2 files changed, 3 insertions(+), 2 deletions(-)
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 create mode 100644 test/fuzz/fuzz-json/leak-sort
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diff --git a/src/shared/json.c b/src/shared/json.c
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index 06ef556233..6d23bdf4f9 100644
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--- a/src/shared/json.c
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+++ b/src/shared/json.c
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@@ -4581,7 +4581,7 @@ static int json_cmp_strings(const void *x, const void *y) {
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 int json_variant_sort(JsonVariant **v) {
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         _cleanup_free_ JsonVariant **a = NULL;
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-        JsonVariant *n = NULL;
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+        _cleanup_(json_variant_unrefp) JsonVariant *n = NULL;
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         size_t m;
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         int r;
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@@ -4614,7 +4614,7 @@ int json_variant_sort(JsonVariant **v) {
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         if (!n->sorted) /* Check if this worked. This will fail if there are multiple identical keys used. */
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                 return -ENOTUNIQ;
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-        JSON_VARIANT_REPLACE(*v, n);
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+        JSON_VARIANT_REPLACE(*v, TAKE_PTR(n));
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         return 1;
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 }
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diff --git a/test/fuzz/fuzz-json/leak-sort b/test/fuzz/fuzz-json/leak-sort
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new file mode 100644
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index 0000000000..f8446dbdc7
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--- /dev/null
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+++ b/test/fuzz/fuzz-json/leak-sort
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@@ -0,0 +1 @@
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+{"":2,"":6,"-":7}
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\ No newline at end of file