Ubuntu
shim-signed package

  1. Bug #1811722
  2. Comment #3

Comment 3 for bug 1811722

Revision history for this message
dann frazier (dannf) wrote : Re: arm64: GRUB crashes in SecureBoot mode w/ some firmware

There are actually 2 separate bugs. The first is a bug in gnu-efi, triggered by this call in shim's errlog.c:

size = SPrint(NULL, 0, L"%a:%d %a() ", file, line, func);

According to the gnu-efi source, "A size of 0 means there is no limit", but SPrint does not check for NULL as the first parameter, and happily dereferences it anyway.

The other issue I've reported in LP: #1811901.