Ubuntu
shim-signed package

  1. Bug #1936759
  2. Comment #13

Comment 13 for bug 1936759

Revision history for this message
Julian Andres Klode (juliank) wrote :

We discussed this a bit upstream and we believe this to be random, and not a regression in those later 15.4 updates.

Apparently there is a buffer overflow in shim that makes it override memory of other EFI components, and depending on where that triggers, it can cause all sorts of random boot failures.

The fix for that, https://github.com/rhboot/shim/pull/365, has been merged for the upcoming 15.5 shim release.