When the proxy isn't replaced and the profile is removed, the proxy
is being leaked resulting in a kmemleak check message of
unreferenced object 0xffff888077a3a490 (size 16):
comm "apparmor_parser", pid 128041, jiffies 4322684109 (age 1097.028s)
hex dump (first 16 bytes):
03 00 00 00 00 00 00 00 b0 92 fd 4b 81 88 ff ff ...........K....
backtrace:
[<0000000084d5daf2>] aa_alloc_proxy+0x58/0xe0
[<00000000ecc0e21a>] aa_alloc_profile+0x159/0x1a0
[<000000004cc9ce15>] unpack_profile+0x275/0x1c40
[<000000007332b3ca>] aa_unpack+0x1e7/0x7e0
[<00000000e25e31bd>] aa_replace_profiles+0x18a/0x1d10
[<00000000350d9415>] policy_update+0x237/0x650
[<000000003fbf934e>] profile_load+0x122/0x160
[<0000000047f7b781>] vfs_write+0x139/0x290
[<000000008ad12358>] ksys_write+0xcd/0x170
[<000000001a9daa7b>] do_syscall_64+0x70/0x310
[<00000000b9efb0cf>] entry_SYSCALL_64_after_hwframe+0x49/0xb3
Make sure to cleanup the profile's embedded label which will result
on the proxy being properly freed.
Fixes: 637f688dc3 ("apparmor: switch from profiles to using labels on contexts")
Signed-off-by: John Johansen <john.johansen@canonical.com>
The subset test is not taking into account the unconfined exception
which will cause profile transitions in the stacked confinement
case to fail when no_new_privs is applied.
This fixes a regression introduced in the fix for
https://bugs.launchpad.net/bugs/1839037
BugLink: https://bugs.launchpad.net/bugs/1844186
Signed-off-by: John Johansen <john.johansen@canonical.com>
Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation version 2 of the license
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 315 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use a radix tree to provide a map between the secid and the label,
and along with it a basic ability to provide secctx conversion.
Shared/cached secctx will be added later.
Signed-off-by: John Johansen <john.johansen@canonical.com>
some label/context sources might not be guaranteed to be null terminiated
provide a size bounded version of label parse to deal with these.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
The current split scheme is actually wrong in that it splits
///&
where that is invalid and should fail. Use the dfa to do a proper
bounded split without having to worry about getting the string
processing right in code.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
With apparmor policy virtualization based on policy namespace View's
we don't generally want/need absolute root based views, however there
are cases like debugging and some secid based conversions where
using a root based view is important.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Acked-by: Seth Arnold <seth.arnold@canonical.com>
Begin moving apparmor to using broader domain labels, that will allow
run time computation of domain type splitting via "stacking" of
profiles into a domain label vec.
Signed-off-by: John Johansen <john.johansen@canonical.com>
John Johansen