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authorRichard Guy Briggs <rgb@redhat.com>2013-12-10 22:10:41 -0500
committerEric Paris <eparis@redhat.com>2014-03-20 10:11:55 -0400
commitc92cdeb45eea38515e82187f48c2e4f435fb4e25 (patch)
treef3eedc38f7e5b6012d053e6c05ad2df3975f4c08 /kernel/auditsc.c
parentad36d28293936b03d6b7996e9d6aadfd73c0eb08 (diff)
downloadlinux-sh-c92cdeb45eea38515e82187f48c2e4f435fb4e25.tar.gz
audit: convert PPIDs to the inital PID namespace.
sys_getppid() returns the parent pid of the current process in its own pid namespace. Since audit filters are based in the init pid namespace, a process could avoid a filter or trigger an unintended one by being in an alternate pid namespace or log meaningless information. Switch to task_ppid_nr() for PPIDs to anchor all audit filters in the init_pid_ns. (informed by ebiederman's 6c621b7e) Cc: stable@vger.kernel.org Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Diffstat (limited to 'kernel/auditsc.c')
-rw-r--r--kernel/auditsc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 57bf178ca7d5..a6cf7ab56e61 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -465,7 +465,7 @@ static int audit_filter_rules(struct task_struct *tsk,
case AUDIT_PPID:
if (ctx) {
if (!ctx->ppid)
- ctx->ppid = sys_getppid();
+ ctx->ppid = task_ppid_nr(tsk);
result = audit_comparator(ctx->ppid, f->op, f->val);
}
break;