# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1488130204 -3600
# Node ID f3d64d9e5d763362d9c585f9b8f05763b72b6175
# Parent  0ef527d91f1f9b4f2293795286bc3b695c282664
patch 8.0.0378: possible overflow when reading corrupted undo file

commit https://github.com/vim/vim/commit/0c8485f0e4931463c0f7986e1ea84a7d79f10c75
Author: Bram Moolenaar <Bram@vim.org>
Date:   Sun Feb 26 18:17:10 2017 +0100

    patch 8.0.0378: possible overflow when reading corrupted undo file

    Problem:    Another possible overflow when reading corrupted undo file.
    Solution:   Check if allocated size is not too big. (King)

diff --git a/src/undo.c b/src/undo.c
--- a/src/undo.c
+++ b/src/undo.c
@@ -1385,7 +1385,7 @@ unserialize_uep(bufinfo_T *bi, int *erro
 {
     int		i;
     u_entry_T	*uep;
-    char_u	**array;
+    char_u	**array = NULL;
     char_u	*line;
     int		line_len;
 
@@ -1402,7 +1402,8 @@ unserialize_uep(bufinfo_T *bi, int *erro
     uep->ue_size = undo_read_4c(bi);
     if (uep->ue_size > 0)
     {
-	array = (char_u **)U_ALLOC_LINE(sizeof(char_u *) * uep->ue_size);
+	if (uep->ue_size < LONG_MAX / (int)sizeof(char_u *))
+	    array = (char_u **)U_ALLOC_LINE(sizeof(char_u *) * uep->ue_size);
 	if (array == NULL)
 	{
 	    *error = TRUE;
@@ -1410,8 +1411,6 @@ unserialize_uep(bufinfo_T *bi, int *erro
 	}
 	vim_memset(array, 0, sizeof(char_u *) * uep->ue_size);
     }
-    else
-	array = NULL;
     uep->ue_array = array;
 
     for (i = 0; i < uep->ue_size; ++i)
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    378,
+/**/
     377,
 /**/
     376,