Hello Stéphane, or anyone else affected, Accepted apparmor into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/apparmor/2.13.3-7ubuntu5.2 in a few hours, and then in the -proposed repository.
Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed- focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification- failed-focal. In either case, without details of your testing we will not be able to proceed. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping! N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days. ** Changed in: apparmor (Ubuntu Focal) Status: New => Fix Committed ** Tags added: verification-needed verification-needed-focal -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apparmor in Ubuntu. https://bugs.launchpad.net/bugs/1964636 Title: Incorrect handling of apparmor `bpf` capability Status in apparmor package in Ubuntu: In Progress Status in snapd package in Ubuntu: Incomplete Status in apparmor source package in Focal: Fix Committed Bug description: [ Impact ] The apparmor_parser before the 3.0 release would build its capability list from the installed kernel headers. The apparmor_parser was built against a kernel without support for cap 'bpf' This was fixed in 3.0 by having a static caps list (with full mapping info) and the dynamic auto-generated list (against the kernel headers) that is used to check that the static list has not become stale. In addition the parser can pull kernel supported caps straight from the apparmor kernel module (it will however be missing the mapping info). Backporting the patches from 3.0 fixes the issue. [ Test Plan ] Before the fix, the following profile fails loading: # echo "profile foo { capability bpf, }" | apparmor_parser -Q AppArmor parser error, in stdin line 1: Invalid capability bpf. # echo $? 1 After the fix, it works as expected: # echo "profile foo { capability bpf, }" | apparmor_parser -Q # echo $? 0 [ Where problems could occur ] With these changes, the parser can change its behavior based on a few things. 1. the kernel its built against. This would not change behavior when run in a container vs at system level. 2. If a feature-file is specified, via --features-file, --policy- features, or --kernel-features. This allows overriding the normal policy and kernel examination that the parser does when compiling policy. 3. If /sys/kernel/security/apparmor/features is not available. The parser will fallback to an old set of features available in a kernel before the kernel module started exporting what the kernel module supports on the running kernel. [ Other Info ] The patches for focal (apparmor-2.13) can be found at: https://launchpad.net/~georgiag/+archive/ubuntu/mqueue-sru/ As mentioned before, these patches are already running on apparmor-3.0. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1964636/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
