diff options
| author | Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> | 2019-04-12 20:04:54 +0900 |
|---|---|---|
| committer | James Morris <jamorris@linux.microsoft.com> | 2019-05-10 14:58:11 -0700 |
| commit | e80b18599a39a625bc8b2e39ba3004a62f78805a (patch) | |
| tree | cbac414dedf2b92c218906bbdcda5b3497bb5cac /security/tomoyo/Kconfig | |
| parent | 1fb3b526df3bd7647e7854915ae6b22299408baf (diff) | |
tomoyo: Add a kernel config option for fuzzing testing.
syzbot is reporting kernel panic triggered by memory allocation fault
injection before loading TOMOYO's policy [1]. To make the fuzzing tests
useful, we need to assign a profile other than "disabled" (no-op) mode.
Therefore, let's allow syzbot to load TOMOYO's built-in policy for
"learning" mode using a kernel config option. This option must not be
enabled for kernels built for production system, for this option also
disables domain/program checks when modifying policy configuration via
/sys/kernel/security/tomoyo/ interface.
[1] https://syzkaller.appspot.com/bug?extid=29569ed06425fcf67a95
Reported-by: syzbot <syzbot+e1b8084e532b6ee7afab@syzkaller.appspotmail.com>
Reported-by: syzbot <syzbot+29569ed06425fcf67a95@syzkaller.appspotmail.com>
Reported-by: syzbot <syzbot+2ee3f8974c2e7dc69feb@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jamorris@linux.microsoft.com>
Diffstat (limited to 'security/tomoyo/Kconfig')
| -rw-r--r-- | security/tomoyo/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/security/tomoyo/Kconfig b/security/tomoyo/Kconfig index 404dce66952a..a00ab7eb6181 100644 --- a/security/tomoyo/Kconfig +++ b/security/tomoyo/Kconfig @@ -74,3 +74,13 @@ config SECURITY_TOMOYO_ACTIVATION_TRIGGER You can override this setting via TOMOYO_trigger= kernel command line option. For example, if you pass init=/bin/systemd option, you may want to also pass TOMOYO_trigger=/bin/systemd option. + +config SECURITY_TOMOYO_INSECURE_BUILTIN_SETTING + bool "Use insecure built-in settings for fuzzing tests." + default n + depends on SECURITY_TOMOYO + select SECURITY_TOMOYO_OMIT_USERSPACE_LOADER + help + Enabling this option forces minimal built-in policy and disables + domain/program checks for run-time policy modifications. Please enable + this option only if this kernel is built for doing fuzzing tests. |