Public bug reported:
[Impact]
Under kernel lockdown, one can't kexec unless it's using kexec_file_load with a
signed kernel.
[Test case]
It was verified that a signed kernel could be loaded with kexec -s, and
properly booted.
[Regression Potential]
A security issue, as we allow more kernels to be loaded than we would like to.
Though, that's already the case in cosmic.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Affects: linux (Ubuntu Bionic)
Importance: Medium
Assignee: Thadeu Lima de Souza Cascardo (cascardo)
Status: In Progress
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Description changed:
[Impact]
Under kernel lockdown, one can't kexec unless it's using kexec_file_load with
a signed kernel.
[Test case]
It was verified that a signed kernel could be loaded with kexec -s, and
properly booted.
[Regression Potential]
- A security issue, as we allow more kernels to be loaded than we would like to.
+ A security issue, as we allow more kernels to be loaded than we would like
to. Though, that's already the case in cosmic.
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Changed in: linux (Ubuntu Bionic)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => Thadeu Lima de Souza Cascardo (cascardo)
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https://bugs.launchpad.net/bugs/1798441
Title:
Allow signed kernels to be kexec'ed under lockdown
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