25850cfd50
Hi, Fedora's patch to forbid insmod in UEFI Secure Boot environments is fine as far as it goes. However, the insmod command is not the only way that modules can be loaded. In particular, the 'normal' command, which implements the usual GRUB menu and the fully-featured command prompt, will implicitly load commands not currently loaded into memory. This permits trivial Secure Boot violations by writing commands implementing whatever you want to do and pointing $prefix at the malicious code. I'm currently test-building this patch (replacing your current grub-2.00-no-insmod-on-sb.patch), but this should be more correct. It moves the check into grub_dl_load_file. |
||
|---|---|---|
| .. | ||
| efi.c | ||
| init.c | ||
| mm.c | ||