|
 |
468bd4 |
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
|
468bd4 |
From: Marco A Benatto <mbenatto@redhat.com>
|
|
|
468bd4 |
Date: Mon, 30 Nov 2020 12:18:24 -0300
|
|
|
468bd4 |
Subject: [PATCH] loader/xnu: Free driverkey data when an error is detected in
|
|
|
468bd4 |
grub_xnu_writetree_toheap()
|
|
|
468bd4 |
|
|
|
468bd4 |
... to avoid memory leaks.
|
|
|
468bd4 |
|
|
|
468bd4 |
Fixes: CID 96640
|
|
|
468bd4 |
|
|
|
468bd4 |
Signed-off-by: Marco A Benatto <mbenatto@redhat.com>
|
|
|
468bd4 |
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
|
|
|
468bd4 |
---
|
|
|
468bd4 |
grub-core/loader/xnu.c | 24 ++++++++++++++++++++----
|
|
|
468bd4 |
1 file changed, 20 insertions(+), 4 deletions(-)
|
|
|
468bd4 |
|
|
|
468bd4 |
diff --git a/grub-core/loader/xnu.c b/grub-core/loader/xnu.c
|
|
|
468bd4 |
index 16bfa7cec72..af885a648c6 100644
|
|
|
468bd4 |
--- a/grub-core/loader/xnu.c
|
|
|
468bd4 |
+++ b/grub-core/loader/xnu.c
|
|
|
468bd4 |
@@ -228,26 +228,33 @@ grub_xnu_writetree_toheap (grub_addr_t *target, grub_size_t *size)
|
|
|
468bd4 |
if (! memorymap)
|
|
|
468bd4 |
return grub_errno;
|
|
|
468bd4 |
|
|
|
468bd4 |
- driverkey = (struct grub_xnu_devtree_key *) grub_malloc (sizeof (*driverkey));
|
|
|
468bd4 |
+ driverkey = (struct grub_xnu_devtree_key *) grub_zalloc (sizeof (*driverkey));
|
|
|
468bd4 |
if (! driverkey)
|
|
|
468bd4 |
return grub_errno;
|
|
|
468bd4 |
driverkey->name = grub_strdup ("DeviceTree");
|
|
|
468bd4 |
if (! driverkey->name)
|
|
|
468bd4 |
- return grub_errno;
|
|
|
468bd4 |
+ {
|
|
|
468bd4 |
+ err = grub_errno;
|
|
|
468bd4 |
+ goto fail;
|
|
|
468bd4 |
+ }
|
|
|
468bd4 |
+
|
|
|
468bd4 |
driverkey->datasize = sizeof (*extdesc);
|
|
|
468bd4 |
driverkey->next = memorymap->first_child;
|
|
|
468bd4 |
memorymap->first_child = driverkey;
|
|
|
468bd4 |
driverkey->data = extdesc
|
|
|
468bd4 |
= (struct grub_xnu_extdesc *) grub_malloc (sizeof (*extdesc));
|
|
|
468bd4 |
if (! driverkey->data)
|
|
|
468bd4 |
- return grub_errno;
|
|
|
468bd4 |
+ {
|
|
|
468bd4 |
+ err = grub_errno;
|
|
|
468bd4 |
+ goto fail;
|
|
|
468bd4 |
+ }
|
|
|
468bd4 |
|
|
|
468bd4 |
/* Allocate the space based on the size with dummy value. */
|
|
|
468bd4 |
*size = grub_xnu_writetree_get_size (grub_xnu_devtree_root, "/");
|
|
|
468bd4 |
err = grub_xnu_heap_malloc (ALIGN_UP (*size + 1, GRUB_XNU_PAGESIZE),
|
|
|
468bd4 |
&src, target);
|
|
|
468bd4 |
if (err)
|
|
|
468bd4 |
- return err;
|
|
|
468bd4 |
+ goto fail;
|
|
|
468bd4 |
|
|
|
468bd4 |
/* Put real data in the dummy. */
|
|
|
468bd4 |
extdesc->addr = *target;
|
|
|
468bd4 |
@@ -256,6 +263,15 @@ grub_xnu_writetree_toheap (grub_addr_t *target, grub_size_t *size)
|
|
|
468bd4 |
/* Write the tree to heap. */
|
|
|
468bd4 |
grub_xnu_writetree_toheap_real (src, grub_xnu_devtree_root, "/");
|
|
|
468bd4 |
return GRUB_ERR_NONE;
|
|
|
468bd4 |
+
|
|
|
468bd4 |
+ fail:
|
|
|
468bd4 |
+ memorymap->first_child = NULL;
|
|
|
468bd4 |
+
|
|
|
468bd4 |
+ grub_free (driverkey->data);
|
|
|
468bd4 |
+ grub_free (driverkey->name);
|
|
|
468bd4 |
+ grub_free (driverkey);
|
|
|
468bd4 |
+
|
|
|
468bd4 |
+ return err;
|
|
|
468bd4 |
}
|
|
|
468bd4 |
|
|
|
468bd4 |
/* Find a key or value in parent key. */
|