CVE-2025-38130

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/connector: only call HDMI audio helper plugged cb if non-null<br /> <br /> On driver remove, sound/soc/codecs/hdmi-codec.c calls the plugged_cb<br /> with NULL as the callback function and codec_dev, as seen in its<br /> hdmi_remove function.<br /> <br /> The HDMI audio helper then happily tries calling said null function<br /> pointer, and produces an Oops as a result.<br /> <br /> Fix this by only executing the callback if fn is non-null. This means<br /> the .plugged_cb and .plugged_cb_dev members still get appropriately<br /> cleared.