Setting audit_failure to AUDIT_FAIL_PANIC may cause system panic. We should disallow uninit user namesapce to change it.
Signed-off-by: Gao feng <[email protected]> --- kernel/audit.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/audit.c b/kernel/audit.c index 306231d..79a8b8e 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -327,6 +327,9 @@ static int audit_set_failure(int state) && state != AUDIT_FAIL_PANIC) return -EINVAL; + if (current_user_ns() != &init_user_ns) + return -EPERM; + return audit_do_config_change("audit_failure", &audit_failure, state); } -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
