mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-29 07:42:23 -05:00
4e58a402ff
* gnu/packages/patches/cpio-CVE-2016-2037.patch: New file. * gnu-system.am (dist_patch_DATA): Add it. * gnu/packages/cpio.scm (cpio)[source]: Add patch.
49 lines
1.6 KiB
Diff
49 lines
1.6 KiB
Diff
Fix CVE-2016-2037 (out of bounds write in process_copy_in()).
|
|
|
|
Copied from upstream mailing list:
|
|
https://lists.gnu.org/archive/html/bug-cpio/2016-01/msg00005.html
|
|
|
|
---
|
|
|
|
Other calls to cpio_safer_name_suffix seem to be safe.
|
|
.
|
|
* src/copyin.c (process_copy_in): Make sure that file_hdr.c_name
|
|
has at least two bytes allocated.
|
|
* src/util.c (cpio_safer_name_suffix): Document that use of this
|
|
function requires to be careful.
|
|
Author: Pavel Raiskup <praiskup@redhat.com>
|
|
|
|
---
|
|
src/copyin.c | 2 ++
|
|
src/util.c | 5 ++++-
|
|
2 files changed, 6 insertions(+), 1 deletion(-)
|
|
|
|
Index: cpio-2.11+dfsg/src/copyin.c
|
|
===================================================================
|
|
--- cpio-2.11+dfsg.orig/src/copyin.c
|
|
+++ cpio-2.11+dfsg/src/copyin.c
|
|
@@ -1433,6 +1433,8 @@ process_copy_in ()
|
|
break;
|
|
}
|
|
|
|
+ if (file_hdr.c_namesize <= 1)
|
|
+ file_hdr.c_name = xrealloc(file_hdr.c_name, 2);
|
|
cpio_safer_name_suffix (file_hdr.c_name, false, !no_abs_paths_flag,
|
|
false);
|
|
|
|
Index: cpio-2.11+dfsg/src/util.c
|
|
===================================================================
|
|
--- cpio-2.11+dfsg.orig/src/util.c
|
|
+++ cpio-2.11+dfsg/src/util.c
|
|
@@ -1374,7 +1374,10 @@ set_file_times (int fd,
|
|
}
|
|
|
|
/* Do we have to ignore absolute paths, and if so, does the filename
|
|
- have an absolute path? */
|
|
+ have an absolute path?
|
|
+ Before calling this function make sure that the allocated NAME buffer has
|
|
+ capacity at least 2 bytes to allow us to store the "." string inside. */
|
|
+
|
|
void
|
|
cpio_safer_name_suffix (char *name, bool link_target, bool absolute_names,
|
|
bool strip_leading_dots)
|