mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2024-12-11 09:24:50 +00:00
32fc41baab
https://lists.gnu.org/archive/html/bug-patch/2018-10/msg00000.html I assume a CVE number will be assigned soon. Signed-off-by: Rosen Penev <rosenp@gmail.com>
54 lines
1.7 KiB
Diff
54 lines
1.7 KiB
Diff
From 424da221cec76ea200cff1fa9b08a6f3d94c28a7 Mon Sep 17 00:00:00 2001
|
|
From: Lubomir Rintel <lkundrak@v3.sk>
|
|
Date: Wed, 31 Oct 2018 16:39:13 -0700
|
|
Subject: [PATCH] Fix error handling with git-style patches
|
|
|
|
When an error is encountered in output_files(), the subsequent call to
|
|
cleanup() calls back into output_files() resulting in an infinte recursion.
|
|
This is trivially reproduced with a git-style patch (which utilizes
|
|
output_file_later()) that tries to patch a nonexistent or unreadable
|
|
file (see attached test case).
|
|
|
|
* src/patch.c: (output_files) clear the files_to_output list before
|
|
iterating it, so that recursive calls won't iterate the same files.
|
|
---
|
|
src/patch.c | 12 ++++++++----
|
|
1 file changed, 8 insertions(+), 4 deletions(-)
|
|
|
|
--- a/src/patch.c
|
|
+++ b/src/patch.c
|
|
@@ -1938,8 +1938,12 @@ output_files (struct stat const *st)
|
|
{
|
|
gl_list_iterator_t iter;
|
|
const void *elt;
|
|
+ gl_list_t files;
|
|
|
|
- iter = gl_list_iterator (files_to_output);
|
|
+ files = files_to_output;
|
|
+ init_files_to_output ();
|
|
+
|
|
+ iter = gl_list_iterator (files);
|
|
while (gl_list_iterator_next (&iter, &elt, NULL))
|
|
{
|
|
const struct file_to_output *file_to_output = elt;
|
|
@@ -1957,8 +1961,8 @@ output_files (struct stat const *st)
|
|
/* Free the list up to here. */
|
|
for (;;)
|
|
{
|
|
- const void *elt2 = gl_list_get_at (files_to_output, 0);
|
|
- gl_list_remove_at (files_to_output, 0);
|
|
+ const void *elt2 = gl_list_get_at (files, 0);
|
|
+ gl_list_remove_at (files, 0);
|
|
if (elt == elt2)
|
|
break;
|
|
}
|
|
@@ -1967,7 +1971,7 @@ output_files (struct stat const *st)
|
|
}
|
|
}
|
|
gl_list_iterator_free (&iter);
|
|
- gl_list_clear (files_to_output);
|
|
+ gl_list_clear (files);
|
|
}
|
|
|
|
/* Fatal exit with cleanup. */
|