From 748ba9733e60b2115f441719db433ddc5a9ffc79 Mon Sep 17 00:00:00 2001
From: Oleksandr Suvorov <cryosay@gmail.com>
Date: Fri, 13 Mar 2026 11:49:03 +0200
Subject: [PATCH] bladerf_common: fix null pointer dereference in init_refclk()

If bladerf_get_pll_refclk_range() fails, range remains nullptr.
The subsequent range->min/max dereference then causes undefined
behavior. Return early on error instead of falling through.

Signed-off-by: Oleksandr Suvorov <cryosay@gmail.com>
---
 lib/bladerf/bladerf_common.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/bladerf/bladerf_common.cc b/lib/bladerf/bladerf_common.cc
index 216ee03..b6479d0 100644
--- a/lib/bladerf/bladerf_common.cc
+++ b/lib/bladerf/bladerf_common.cc
@@ -622,6 +622,7 @@ void bladerf_common::init_refclk(int freq)
     if (status != 0) {
       BLADERF_WARNING("bladerf_get_pll_refclk_range: "
                       << bladerf_strerror(status));
+      return;
     }
     if (freq < range->min || freq > range->max)
     {