CVE-2026-53291

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ALSA: hda/conexant: Fix missing error check for jack detection<br /> <br /> In cx_probe(), the return value of snd_hda_jack_detect_enable_callback()<br /> is ignored. This function returns a pointer, and if it fails (e.g., due<br /> to memory allocation failure), it returns an error pointer which must<br /> be checked using IS_ERR().<br /> <br /> If the registration fails, the driver continues to probe, but the jack<br /> detection callback will not be registered. This can lead to a kernel<br /> crash later when the driver attempts to handle jack events or accesses<br /> the uninitialized structure.<br /> <br /> Check the return value using IS_ERR() and propagate the error via<br /> PTR_ERR() to the probe caller.