Commit 6e3ee990 authored Oct 16, 2021 by Gaosheng Cui Committed by Paul Moore Oct 18, 2021

audit: fix possible null-pointer dereference in audit_filter_rules



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>

parent 67d69e9d

kernel/auditsc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -657,7 +657,7 @@ 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;