Commit d6f451f1 authored Oct 16, 2021 by Gaosheng Cui Committed by Greg Kroah-Hartman Oct 27, 2021

audit: fix possible null-pointer dereference in audit_filter_rules



commit 6e3ee990c90494561921c756481d0e2125d8b895 upstream.

Fix  possible null-pointer dereference in audit_filter_rules.

audit_filter_rules() error: we previously assumed 'ctx' could be null

Cc: stable@vger.kernel.org
Fixes: bf361231 ("audit: add saddr_fam filter field")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Gaosheng Cui <cuigaosheng1@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent c974f2f9

kernel/auditsc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -624,7 +624,7 @@ static int audit_filter_rules(struct task_struct *tsk,
		result = audit_comparator(audit_loginuid_set(tsk), f->op, f->val);
		break;
		case AUDIT_SADDR_FAM:
		if (ctx->sockaddr)
		if (ctx && ctx->sockaddr)
		result = audit_comparator(ctx->sockaddr->ss_family,
		f->op, f->val);
		break;