From d8edd363be3184c5738438fde937fd5ebc2d4923 Mon Sep 17 00:00:00 2001
From: Huaxin Lu <luhuaxin1@huawei.com>
Date: Mon, 19 Jun 2023 07:17:02 +0800
Subject: [PATCH] libselinux: add check for calloc in check_booleans

Check the return value of calloc() to avoid null pointer reference.

Signed-off-by: Huaxin Lu <luhuaxin1@huawei.com>
Acked-by: Petr Lautrbach <lautrbach@redhat.com>
---
 src/audit2why.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/audit2why.c b/src/audit2why.c
index ba1a66eb..8c4c07d5 100644
--- a/src/audit2why.c
+++ b/src/audit2why.c
@@ -149,6 +149,12 @@ static int check_booleans(struct boolean_t **bools)
 
 	if (fcnt > 0) {
 		*bools = calloc(sizeof(struct boolean_t), fcnt + 1);
+		if (!*bools) {
+			PyErr_SetString( PyExc_MemoryError, "Out of memory\n");
+			free(foundlist);
+			return 0;
+		}
+
 		struct boolean_t *b = *bools;
 		for (i = 0; i < fcnt; i++) {
 			int ctr = foundlist[i];
-- 
2.27.0