-stable review patch. If anyone has any objections, please let us know.
------------------
From: Al Viro <[email protected]>
Check for audit_signals is misplaced and check for
audit_dummy_context() is missing; as the result, if we send
signal to auditd from task with NULL ->audit_context while
we have audit_signals != 0 we end up with an oops.
Signed-off-by: Al Viro <[email protected]>
Acked-by: James Morris <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
kernel/auditsc.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1998,19 +1998,19 @@ int __audit_signal_info(int sig, struct
extern uid_t audit_sig_uid;
extern u32 audit_sig_sid;
- if (audit_pid && t->tgid == audit_pid &&
- (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1)) {
- audit_sig_pid = tsk->pid;
- if (ctx)
- audit_sig_uid = ctx->loginuid;
- else
- audit_sig_uid = tsk->uid;
- selinux_get_task_sid(tsk, &audit_sig_sid);
+ if (audit_pid && t->tgid == audit_pid) {
+ if (sig == SIGTERM || sig == SIGHUP || sig == SIGUSR1) {
+ audit_sig_pid = tsk->pid;
+ if (ctx)
+ audit_sig_uid = ctx->loginuid;
+ else
+ audit_sig_uid = tsk->uid;
+ selinux_get_task_sid(tsk, &audit_sig_sid);
+ }
+ if (!audit_signals || audit_dummy_context())
+ return 0;
}
- if (!audit_signals) /* audit_context checked in wrapper */
- return 0;
-
/* optimize the common case by putting first signal recipient directly
* in audit_context */
if (!ctx->target_pid) {
--
-
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