[openssl-commits] [openssl] OpenSSL_1_0_2-stable update

[Rich Salz]

The branch OpenSSL_1_0_2-stable has been updated
       via  8dc2e33468b1ee80ccf617bba760c84be65dcefb (commit)
      from  55abd566ea02cd21f7bff60db41f97bddad31496 (commit)


- Log -----------------------------------------------------------------
commit 8dc2e33468b1ee80ccf617bba760c84be65dcefb
Author: Bernd Edlinger <bernd.edlinger at hotmail.de>
Date:   Tue Jun 13 19:00:35 2017 +0200

    Fix a possible crash in the error handling.
    
    Reviewed-by: Rich Salz <rsalz at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/3672)
    
    (cherry picked from commit 4fc426b78964b3d234cb7b1b6112c9b80e16a13a)

-----------------------------------------------------------------------

Summary of changes:
 crypto/err/err.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/crypto/err/err.c b/crypto/err/err.c
index 0b1fcfc..32fe8f3 100644
--- a/crypto/err/err.c
+++ b/crypto/err/err.c
@@ -725,6 +725,8 @@ void ERR_put_error(int lib, int func, int reason, const char *file, int line)
     }
 #endif
     es = ERR_get_state();
+    if (es == NULL)
+        return;
 
     es->top = (es->top + 1) % ERR_NUM_ERRORS;
     if (es->top == es->bottom)
@@ -742,6 +744,8 @@ void ERR_clear_error(void)
     ERR_STATE *es;
 
     es = ERR_get_state();
+    if (es == NULL)
+        return;
 
     for (i = 0; i < ERR_NUM_ERRORS; i++) {
         err_clear(es, i);
@@ -806,6 +810,8 @@ static unsigned long get_error_values(int inc, int top, const char **file,
     unsigned long ret;
 
     es = ERR_get_state();
+    if (es == NULL)
+        return 0;
 
     if (inc && top) {
         if (file)
@@ -1066,6 +1072,8 @@ void ERR_set_error_data(char *data, int flags)
     int i;
 
     es = ERR_get_state();
+    if (es == NULL)
+        return;
 
     i = es->top;
     if (i == 0)
@@ -1121,6 +1129,8 @@ int ERR_set_mark(void)
     ERR_STATE *es;
 
     es = ERR_get_state();
+    if (es == NULL)
+        return 0;
 
     if (es->bottom == es->top)
         return 0;
@@ -1133,6 +1143,8 @@ int ERR_pop_to_mark(void)
     ERR_STATE *es;
 
     es = ERR_get_state();
+    if (es == NULL)
+        return 0;
 
     while (es->bottom != es->top
            && (es->err_flags[es->top] & ERR_FLAG_MARK) == 0) {