File pam_ldap-fix-leaks.patch of Package pam_ldap.18221

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File pam_ldap-fix-leaks.patch of Package pam_ldap.18221

From 2017376ac0adbcbadc386737980ebb71ae28e929 Mon Sep 17 00:00:00 2001
From: Biplab Sarkar <biplab.sarkar@nokia.com>
Date: Fri, 29 Nov 2019 14:39:49 +0530
Subject: [PATCH] fixed memory leaks

Update: Fix segfault in pam_sm_chauthtok().
Signed-off-by: Josef Cejka <jcejka@suse.com>

---
 pam_ldap.c | 46 ++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 38 insertions(+), 8 deletions(-)

Index: pam_ldap-186/pam_ldap.c
===================================================================
--- pam_ldap-186.orig/pam_ldap.c
+++ pam_ldap-186/pam_ldap.c
@@ -142,6 +142,8 @@
 #define ldap_memfree(x)	free(x)
 #endif
 
+#define FREE_IF(x) if(x != NULL){free(x); x = NULL;}
+
 #ifdef __GNUC__
 #define __UNUSED__ __attribute__ ((unused))
 #else
@@ -517,7 +519,21 @@ _release_config (pam_ldap_config_t ** pc
     {
       free (c->password_prohibit_message);
     }
-
+  if (c->ssd != NULL)
+    {
+      /*
+      This is a linked list.
+      */
+      pam_ssd_t *p_ssd = c->ssd;
+      while(p_ssd != NULL)
+      {
+        pam_ssd_t *p_ssd_next = p_ssd->next;
+        FREE_IF(p_ssd->base);
+        FREE_IF(p_ssd->filter);
+        FREE_IF(p_ssd);
+        p_ssd = p_ssd_next;
+      };
+    }
   memset (c, 0, sizeof (*c));
   free (c);
   *pconfig = NULL;
@@ -3338,7 +3354,7 @@ static int
 _get_authtok (pam_handle_t * pamh, int flags, int first)
 {
   int rc;
-  char *p;
+  char *p = NULL;
   struct pam_message msg[1], *pmsg[1];
   struct pam_response *resp;
   struct pam_conv *conv;
@@ -3379,7 +3395,7 @@ _get_authtok (pam_handle_t * pamh, int f
 
   free (resp);
   pam_set_item (pamh, PAM_AUTHTOK, p);
-
+  FREE_IF(p);
   return PAM_SUCCESS;
 }
 
@@ -3399,9 +3415,14 @@ _conv_sendmsg (struct pam_conv *aconv,
   msg.msg = (char *) message;
   resp = NULL;
 
-  return aconv->conv (1,
+  int ret = aconv->conv (1,
 		      (CONST_ARG struct pam_message **) &pmsg,
 		      &resp, aconv->appdata_ptr);
+  if (resp != NULL) {
+      FREE_IF(resp->resp);
+      FREE_IF(resp);
+  }
+  return (ret);
 }
 
 PAM_EXTERN int

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File pam_ldap-fix-leaks.patch of Package pam_ldap.18221

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