32 lines
960 B
Diff
32 lines
960 B
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Daniel Axtens <dja@axtens.net>
|
|
Date: Thu, 21 Jan 2021 18:54:29 +1100
|
|
Subject: [PATCH] disk/lvm: Bail on missing PV list
|
|
|
|
There's an if block for the presence of "physical_volumes {", but if
|
|
that block is absent, then p remains NULL and a NULL-deref will result
|
|
when looking for logical volumes.
|
|
|
|
It doesn't seem like LVM makes sense without physical volumes, so error
|
|
out rather than crashing.
|
|
|
|
Signed-off-by: Daniel Axtens <dja@axtens.net>
|
|
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
|
|
---
|
|
grub-core/disk/lvm.c | 2 ++
|
|
1 file changed, 2 insertions(+)
|
|
|
|
diff --git a/grub-core/disk/lvm.c b/grub-core/disk/lvm.c
|
|
index ec3545e164b..1e80137c452 100644
|
|
--- a/grub-core/disk/lvm.c
|
|
+++ b/grub-core/disk/lvm.c
|
|
@@ -371,6 +371,8 @@ error_parsing_metadata:
|
|
goto fail4;
|
|
}
|
|
}
|
|
+ else
|
|
+ goto fail4;
|
|
|
|
p = grub_strstr (p, "logical_volumes {");
|
|
if (p)
|