We should not try to copy any memory area which is outside of the original
fdt. If this extra memory is controlled by a hypervisor this might end
with a crash.
Signed-off-by: Heinrich Schuchardt <xypron.g...@gmx.de>
---
grub-core/loader/efi/fdt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/grub-core/loader/efi/fdt.c b/grub-core/loader/efi/fdt.c
index a18ca8ccb..ee9c5592c 100644
--- a/grub-core/loader/efi/fdt.c
+++ b/grub-core/loader/efi/fdt.c
@@ -66,7 +66,7 @@ grub_fdt_load (grub_size_t additional_size)
if (raw_fdt)
{
- grub_memmove (fdt, raw_fdt, size);
+ grub_memmove (fdt, raw_fdt, size - additional_size);
grub_fdt_set_totalsize (fdt, size);
}
else
--
2.19.2
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