** Also affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-oem-osp1 (Ubuntu Xenial)
** No longer affects: linux-oem-osp1 (Ubuntu Eoan)
** No longer affects: linux-oem-osp1 (Ubuntu Focal)
** Changed in: linux-oem-osp1 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-osp1 (Ubuntu Bionic)
Status: New => Fix Committed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1884159
Title:
Update lockdown patches
Status in linux package in Ubuntu:
Fix Committed
Status in linux-oem-osp1 package in Ubuntu:
Invalid
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Status in linux-oem-osp1 source package in Bionic:
Fix Committed
Status in linux source package in Eoan:
Fix Committed
Status in linux source package in Focal:
Fix Committed
Bug description:
Impact: The lockdown patches have evolved over time, and part of this
was restricting more areas of the kernel. Not all of these additions
were backported, and some can lead to lockdown bypasses, see [1] and
[2].
Fix: Backport newer lockdown restrictions to older releases.
Test Case: Test cases for most of the backports can be found at [3],
and [4] is another test case. Some which need e.g. specific hardware
to test have not been tested.
Regression Potential: Most of these are small, simple fixes with low
potential for regression. Users may also lose access to some
functionality previously accissible under secure boot. Some changes
are more substantial, especially the hw_param and debugfs changes for
xenial, but they are based on well-tested upstream code. The xmon
backports also carry a more moderate risk of regression.
[1] https://lists.ubuntu.com/archives/kernel-team/2020-June/111050.html
[2] https://lore.kernel.org/lkml/20200615104332.901519-1-ja...@zx2c4.com/
[3] https://git.launchpad.net/~sforshee/+git/lockdown-tests
[4]
https://git.zx2c4.com/american-unsigned-language/tree/american-unsigned-language.sh
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1884159/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
