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From f5b9e0f2a8ada29cebeb6e51cbcbea396375ab26 Mon Sep 17 00:00:00 2001
From: huangyu <huangyu106@huawei.com>
Date: Wed, 7 Dec 2022 14:35:26 +0800
Subject: [PATCH] fix Segmentation fault in nss module
Signed-off-by: huangyu <huangyu106@huawei.com>
---
nss/nss_module.c | 2 +-
nss/nsswitch.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/nss/nss_module.c b/nss/nss_module.c
index b28cb94a..bb2807e9 100644
--- a/nss/nss_module.c
+++ b/nss/nss_module.c
@@ -352,7 +352,7 @@ nss_load_all_libraries (enum nss_database service)
{
nss_action_list ni = NULL;
- if (__nss_database_get (service, &ni))
+ if (__nss_database_get (service, &ni) && ni != NULL)
while (ni->module != NULL)
{
__nss_module_load (ni->module);
diff --git a/nss/nsswitch.c b/nss/nsswitch.c
index 6b7d4c78..c9d7e372 100644
--- a/nss/nsswitch.c
+++ b/nss/nsswitch.c
@@ -133,7 +133,7 @@ libc_hidden_def (__nss_next2)
void *
__nss_lookup_function (nss_action_list ni, const char *fct_name)
{
- if (ni->module == NULL)
+ if (ni == NULL || ni->module == NULL)
return NULL;
return __nss_module_get_function (ni->module, fct_name);
}
--
2.33.0
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