From f63402685ccd4bfa9c441d63067853db2a1f6c6a Mon Sep 17 00:00:00 2001
From: Darren Kenny <darren.kenny@oracle.com>
Date: Tue, 8 Dec 2020 10:00:51 +0000
Subject: [PATCH] disk/ldm: Fix memory leak on uninserted lv references

The problem here is that the memory allocated to the variable lv is not
yet inserted into the list that is being processed at the label fail2.

As we can already see at line 342, which correctly frees lv before going
to fail2, we should also be doing that at these earlier jumps to fail2.

Fixes: CID 73824

Reference: http://git.savannah.gnu.org/cgit/grub.git/commit/?id=156c281a1625dc73fd350530630c6f2d5673d4f6
---
 grub-core/disk/ldm.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/grub-core/disk/ldm.c b/grub-core/disk/ldm.c
index 54713f4..e82e989 100644
--- a/grub-core/disk/ldm.c
+++ b/grub-core/disk/ldm.c
@@ -321,7 +321,10 @@ make_vg (grub_disk_t disk,
 	  lv->visible = 1;
 	  lv->segments = grub_zalloc (sizeof (*lv->segments));
 	  if (!lv->segments)
-	    goto fail2;
+	    {
+	      grub_free (lv);
+	      goto fail2;
+	    }
 	  lv->segments->start_extent = 0;
 	  lv->segments->type = GRUB_DISKFILTER_MIRROR;
 	  lv->segments->node_count = 0;
@@ -329,7 +332,10 @@ make_vg (grub_disk_t disk,
 	  lv->segments->nodes = grub_calloc (lv->segments->node_alloc,
 					     sizeof (*lv->segments->nodes));
 	  if (!lv->segments->nodes)
-	    goto fail2;
+	    {
+	      grub_free (lv);
+	      goto fail2;
+	    }
 	  ptr = vblk[i].dynamic;
 	  if (ptr + *ptr + 1 >= vblk[i].dynamic
 	      + sizeof (vblk[i].dynamic))
-- 
2.19.1

