[PATCH v2 1/3] grub-editenv: Verify the variable size

[Prarit Bhargava]

It is possible to execute 'grub-editenv - set ="some data"',
which results in an unremoveable entry

="some data"

Verify the variable has a size before setting a value.

Signed-off-by: Prarit Bhargava <address@hidden>
Cc: address@hidden
Cc: address@hidden
Cc: address@hidden
Cc: address@hidden
Cc: Daniel Kiper <address@hidden>
---
 util/grub-editenv.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/util/grub-editenv.c b/util/grub-editenv.c
index 118e89fe57fe..0b6c69b9688c 100644
--- a/util/grub-editenv.c
+++ b/util/grub-editenv.c
@@ -217,6 +217,9 @@ set_variables (const char *name, int argc, char *argv[])
 
       *(p++) = 0;
 
+      if (! grub_strlen(argv[0]))
+        grub_util_error (_("No parameter specified"));
+
       if (! grub_envblk_set (envblk, argv[0], p))
         grub_util_error ("%s", _("environment block too small"));
 
-- 
2.17.2