[PATCH ghak82] audit: Fix wrong task in comparison of session ID

[Ondrej Mosnacek]

The audit_filter_rules() function in auditsc.c compared the session ID
with the credentials of the current task, while it should use the
credentials of the task given to audit_filter_rules() as a parameter
(tsk).

GitHub issue:
https://github.com/linux-audit/audit-kernel/issues/82

Fixes: 8fae47705685 ("audit: add support for session ID user filter")
Cc: stable at vger.kernel.org
Signed-off-by: Ondrej Mosnacek <omosnace at redhat.com>
---
 kernel/auditsc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index ec38e4d97c23..6d577a34b16b 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -513,7 +513,7 @@ static int audit_filter_rules(struct task_struct *tsk,
 			result = audit_gid_comparator(cred->fsgid, f->op, f->gid);
 			break;
 		case AUDIT_SESSIONID:
-			sessionid = audit_get_sessionid(current);
+			sessionid = audit_get_sessionid(tsk);
 			result = audit_comparator(sessionid, f->op, f->val);
 			break;
 		case AUDIT_PERS:
-- 
2.17.0