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[bug #43601] Built-in gpg verification fails over tftp

From: Rob
Subject: [bug #43601] Built-in gpg verification fails over tftp
Date: Thu, 13 Nov 2014 15:53:49 +0000
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:29.0) Gecko/20100101 Firefox/29.0


                 Summary: Built-in gpg verification  fails over tftp
                 Project: GNU GRUB
            Submitted by: rkliewer
            Submitted on: Thu 13 Nov 2014 03:53:48 PM GMT
                Category: Security
                Severity: Major
                Priority: 5 - Normal
              Item Group: Software Error
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: Git master
         Reproducibility: Every Time
         Planned Release: None



I am booting an x86_64 efi image over tftp on a vmware 10 instance. I'm seeing
an issue in both grub 2.02~beta2 and the latest git when using a gpg public
key with check_signatures enabled. All file operations over tftp (or http)
complete, but grub immediately throws the following error:

alloc magic is broken at <addr>: <value> Aborted.
Press any key to exit.

Pressing a key takes me back to the EFI firmware. I can work around the issue
by disabling check signatures and manually running verify_detached on a file,
but that leaves me having to pull the kernel and initrd twice and nearly
double my boot time. Signature checking from a memdisk does not appear to be


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