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[PATCH] efidisk: write to null pointer ldp
From: |
Eric Snowberg |
Subject: |
[PATCH] efidisk: write to null pointer ldp |
Date: |
Thu, 28 Mar 2019 14:32:31 -0600 |
Function grub_efi_find_last_device_path may return constant NULL when
called from find_parent_device.
Signed-off-by: Eric Snowberg <address@hidden>
---
grub-core/disk/efi/efidisk.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/grub-core/disk/efi/efidisk.c b/grub-core/disk/efi/efidisk.c
index 0f132f5..961c155 100644
--- a/grub-core/disk/efi/efidisk.c
+++ b/grub-core/disk/efi/efidisk.c
@@ -129,6 +129,9 @@ find_parent_device (struct grub_efidisk_data *devices,
return 0;
ldp = grub_efi_find_last_device_path (dp);
+ if (! ldp)
+ return 0;
+
ldp->type = GRUB_EFI_END_DEVICE_PATH_TYPE;
ldp->subtype = GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE;
ldp->length = sizeof (*ldp);
--
1.8.3.1
- [PATCH] efidisk: write to null pointer ldp,
Eric Snowberg <=