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- From 2958695c4cdc785de6ed708709af071a2d20afef 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>
- Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.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 36da575..8e560f3 100644
- --- a/grub-core/disk/lvm.c
- +++ b/grub-core/disk/lvm.c
- @@ -370,6 +370,8 @@ grub_lvm_detect (grub_disk_t disk,
- goto fail4;
- }
- }
- + else
- + goto fail4;
-
- p = grub_strstr (p, "logical_volumes {");
- if (p)
- --
- 2.14.2
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