diff options
| author | Richard Guy Briggs <rgb@redhat.com> | 2013-12-10 22:10:41 -0500 |
|---|---|---|
| committer | Show Liu <show.liu@linaro.org> | 2014-06-18 12:03:35 +0800 |
| commit | b4ac88da895408d8901e11661869dff317e94593 (patch) | |
| tree | 0a15aadfdf583f292ba31589604258b79ff166e7 /kernel | |
| parent | c6e4aa020120309f4612629fe68b5ba341057d10 (diff) | |
audit: convert PPIDs to the inital PID namespace.
commit c92cdeb45eea38515e82187f48c2e4f435fb4e25 upstream.
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: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/audit.c | 4 | ||||
| -rw-r--r-- | kernel/auditsc.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/kernel/audit.c b/kernel/audit.c index 95a20f3f52f..d5f31c17813 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1829,10 +1829,10 @@ void audit_log_task_info(struct audit_buffer *ab, struct task_struct *tsk) spin_unlock_irq(&tsk->sighand->siglock); audit_log_format(ab, - " ppid=%ld pid=%d auid=%u uid=%u gid=%u" + " ppid=%d pid=%d auid=%u uid=%u gid=%u" " euid=%u suid=%u fsuid=%u" " egid=%u sgid=%u fsgid=%u tty=%s ses=%u", - sys_getppid(), + task_ppid_nr(tsk), tsk->pid, from_kuid(&init_user_ns, audit_get_loginuid(tsk)), from_kuid(&init_user_ns, cred->uid), diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 7aef2f4b6c6..3b29605ea1b 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -459,7 +459,7 @@ 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; |