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| author | Richard Guy Briggs <rgb@redhat.com> | 2013-12-10 22:10:41 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-31 13:20:27 -0700 |
| commit | f661428d2efe8e3dc0912b79305e36bde54a8068 (patch) | |
| tree | 26e63006255f6db3f98be9d4095210a75250e4e9 /kernel/auditsc.c | |
| parent | 6960029959f333bed9b0690c58429256fddd0a17 (diff) | |
| download | lwn-f661428d2efe8e3dc0912b79305e36bde54a8068.tar.gz lwn-f661428d2efe8e3dc0912b79305e36bde54a8068.zip | |
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/auditsc.c')
| -rw-r--r-- | kernel/auditsc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 7aef2f4b6c64..3b29605ea1b2 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; |