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Groups > linux.debian.kernel > #85164
| From | Guido Berhoerster <guido+debian@berhoerster.name> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled |
| Date | 2025-01-16 14:30 +0100 |
| Message-ID | <K5y6B-9mFR-1@gated-at.bofh.it> (permalink) |
| References | <K30sp-6TAG-3@gated-at.bofh.it> <K30sp-6TAG-3@gated-at.bofh.it> <K30sp-6TAG-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
From my superficial reading of the code the error seems to come from here: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/security/apparmor/lsm.c?h=v6.12.6#n1313 It appears that AppArmor SO_PEERSEC support for unix domain sockets bound to a filesystem path name is missing from the upstream kernel and is only enabled as a side effect of a patch distributed with AppArmor: https://gitlab.com/apparmor/apparmor/-/blob/692e6850ba90582105713a683bed753bad696aab/kernel-patches/v4.17/0002-apparmor-af_unix-mediation.patch Ubuntu kernels contain a rebased variant of the patch which is likely why SO_PEERSEC works on Ubuntu. The reason I stumbled on this issue is that we (ubports-team) are currently packaging lomiri-content-hub which implicitly relies on SO_PEERSEC through the DBus daemon to get the AppArmor profile of a process requesting to export a file. Without this it is not possible to confine Lomiri/Ubuntu Touch apps running on Debian. -- Guido Berhoerster
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Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled Guido Berhoerster <guido+debian@berhoerster.name> - 2025-01-09 14:10 +0100
Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled Guido Berhoerster <guido+debian@berhoerster.name> - 2025-01-16 14:30 +0100
Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled Bastian Blank <waldi@debian.org> - 2025-01-17 19:30 +0100
Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled Guido Berhoerster <guido+debian@berhoerster.name> - 2025-01-20 13:10 +0100
Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled Salvatore Bonaccorso <carnil@debian.org> - 2025-01-31 07:00 +0100
Processed: Re: Bug#1092591: linux-image-6.12.6-amd64: SO_PEERSEC fails with ENOPROTOOPT with AppArmor enabled "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-01-17 19:30 +0100
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