| 2022-08-26 21:35:25 |
dann frazier |
bug |
|
|
added bug |
| 2022-08-26 21:35:58 |
dann frazier |
nominated for series |
|
Ubuntu Jammy |
|
| 2022-08-26 21:35:58 |
dann frazier |
bug task added |
|
grub2 (Ubuntu Jammy) |
|
| 2022-08-26 21:35:58 |
dann frazier |
nominated for series |
|
Ubuntu Bionic |
|
| 2022-08-26 21:35:58 |
dann frazier |
bug task added |
|
grub2 (Ubuntu Bionic) |
|
| 2022-08-26 21:35:58 |
dann frazier |
nominated for series |
|
Ubuntu Kinetic |
|
| 2022-08-26 21:35:58 |
dann frazier |
bug task added |
|
grub2 (Ubuntu Kinetic) |
|
| 2022-08-26 21:35:58 |
dann frazier |
nominated for series |
|
Ubuntu Focal |
|
| 2022-08-26 21:35:58 |
dann frazier |
bug task added |
|
grub2 (Ubuntu Focal) |
|
| 2022-08-27 14:50:09 |
dann frazier |
bug task added |
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grub2-unsigned (Ubuntu) |
|
| 2022-08-27 14:50:19 |
dann frazier |
bug task deleted |
grub2 (Ubuntu) |
|
|
| 2022-08-27 16:32:06 |
Launchpad Janitor |
merge proposal linked |
|
https://code.launchpad.net/~dannf/grub/+git/grub/+merge/429024 |
|
| 2022-08-29 15:34:43 |
dann frazier |
bug task deleted |
grub2 (Ubuntu Bionic) |
|
|
| 2022-08-29 15:34:45 |
dann frazier |
bug task deleted |
grub2 (Ubuntu Focal) |
|
|
| 2022-08-29 15:34:47 |
dann frazier |
bug task deleted |
grub2 (Ubuntu Jammy) |
|
|
| 2022-08-29 15:34:51 |
dann frazier |
bug task deleted |
grub2 (Ubuntu Kinetic) |
|
|
| 2022-08-29 15:34:57 |
dann frazier |
grub2-unsigned (Ubuntu Kinetic): assignee |
|
dann frazier (dannf) |
|
| 2022-08-29 15:35:00 |
dann frazier |
grub2-unsigned (Ubuntu Kinetic): status |
New |
Fix Committed |
|
| 2022-09-16 20:11:47 |
Matthieu Clemenceau |
tags |
|
foundations-triage-discuss |
|
| 2022-09-20 09:47:49 |
Launchpad Janitor |
grub2-unsigned (Ubuntu Kinetic): status |
Fix Committed |
Fix Released |
|
| 2022-09-29 15:32:37 |
Julian Andres Klode |
bug |
|
|
added subscriber Ubuntu Foundations Bugs |
| 2022-09-29 15:32:55 |
Julian Andres Klode |
tags |
foundations-triage-discuss |
|
|
| 2022-09-29 15:33:28 |
Julian Andres Klode |
grub2-unsigned (Ubuntu Kinetic): importance |
Undecided |
High |
|
| 2022-09-29 15:33:30 |
Julian Andres Klode |
grub2-unsigned (Ubuntu Jammy): importance |
Undecided |
High |
|
| 2022-09-29 15:33:32 |
Julian Andres Klode |
grub2-unsigned (Ubuntu Focal): importance |
Undecided |
High |
|
| 2022-09-29 15:33:33 |
Julian Andres Klode |
grub2-unsigned (Ubuntu Bionic): importance |
Undecided |
High |
|
| 2022-10-05 15:06:00 |
dann frazier |
description |
[Impact]
Similar to bug 1987541, where shim may execute GRUB w/ polluted instruction cache, GRUB itself also fails to flush the instruction cache for the kernel memory before starting it. This is believed to be the source of some rare crashes seen executing instructions in the kernel EFI stub.
[Test Case]
Put an arm64 server in a reboot loop and watch for a crash (synchronous exception abort) after GRUB has started executing the kernel.
[Fix]
https://github.com/rhboot/grub2/pull/107
[What could go wrong]
The only risk I can identify is possibly-measurable performance impact to booting the kernel. |
[Impact]
Similar to bug 1987541, where shim may execute GRUB w/ polluted instruction cache, GRUB itself also fails to flush the instruction cache for the kernel memory before starting it. This is believed to be the source of some rare crashes seen executing instructions in the kernel EFI stub.
[Test Case]
Put an arm64 server in a reboot loop and watch for a crash (synchronous exception abort) after GRUB has started executing the kernel.
[Fix]
https://github.com/rhboot/grub2/commit/4e9020a937a30873fa63ba34e16c1e6fb7e7b718
[What could go wrong]
The only risk I can identify is possibly-measurable performance impact to booting the kernel. |
|
| 2022-10-12 12:37:25 |
Launchpad Janitor |
merge proposal linked |
|
https://code.launchpad.net/~juliank/grub/+git/ubuntu/+merge/431421 |
|
| 2022-10-20 11:51:26 |
Julian Andres Klode |
tags |
|
foundations-todo |
|
| 2022-12-09 00:14:18 |
Steve Langasek |
grub2-unsigned (Ubuntu Focal): status |
New |
Fix Committed |
|
| 2022-12-09 00:14:20 |
Steve Langasek |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2022-12-09 00:14:22 |
Steve Langasek |
bug |
|
|
added subscriber SRU Verification |
| 2022-12-09 00:14:26 |
Steve Langasek |
tags |
foundations-todo |
foundations-todo verification-needed verification-needed-focal |
|
| 2022-12-12 20:39:27 |
dann frazier |
tags |
foundations-todo verification-needed verification-needed-focal |
foundations-todo verification-done verification-done-focal |
|
| 2023-01-11 05:29:17 |
Launchpad Janitor |
grub2-unsigned (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2023-01-11 05:29:17 |
Launchpad Janitor |
cve linked |
|
2022-2601 |
|
| 2023-01-11 05:29:17 |
Launchpad Janitor |
cve linked |
|
2022-3775 |
|
| 2023-01-11 05:29:38 |
Steve Langasek |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2023-01-30 15:14:19 |
Launchpad Janitor |
grub2-unsigned (Ubuntu Jammy): status |
New |
Fix Released |
|
| 2023-01-30 18:39:34 |
Launchpad Janitor |
grub2-unsigned (Ubuntu Bionic): status |
New |
Fix Released |
|
| 2023-06-02 15:34:36 |
Benjamin Drung |
tags |
foundations-todo verification-done verification-done-focal |
verification-done verification-done-focal |
|
