bootstd: Fix a memory leak in the efi manager bootflow

efi_get_var() allocates memory which has to be freed after the value of
the variable is consumed. Free the memory properly

Fixes: f2bfa0cb1794 ("bootstd: Make efi_mgr bootmeth work for non-sandbox setups")
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>

diff --git a/boot/bootmeth_efi_mgr.c b/boot/bootmeth_efi_mgr.c
index e6c42d41fb804b18b5f1f2ba4ffb4e6293e1126e..6428c096d7f8c790551b12dd28b0252ea5293b62 100644 (file)
--- a/boot/bootmeth_efi_mgr.c
+++ b/boot/bootmeth_efi_mgr.c
@@ -16,6 +16,7 @@
 #include <dm.h>
 #include <efi_loader.h>
 #include <efi_variable.h>
+#include <malloc.h>
 
 /**
  * struct efi_mgr_priv - private info for the efi-mgr driver
@@ -65,6 +66,7 @@ static int efi_mgr_read_bootflow(struct udevice *dev, struct bootflow *bflow)
        bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid,
                                &size);
        if (bootorder) {
+               free(bootorder);
                bflow->state = BOOTFLOWST_READY;
                return 0;
        }