In the Linux kernel, the following vulnerability has been resolved:

ALSA: hda/conexant: Fix missing error check for jack detection

In cx_probe(), the return value of snd_hda_jack_detect_enable_callback()
is ignored. This function returns a pointer, and if it fails (e.g., due
to memory allocation failure), it returns an error pointer which must
be checked using IS_ERR().

If the registration fails, the driver continues to probe, but the jack
detection callback will not be registered. This can lead to a kernel
crash later when the driver attempts to handle jack events or accesses
the uninitialized structure.

Check the return value using IS_ERR() and propagate the error via
PTR_ERR() to the probe caller.

https://git.kernel.org/stable/c/1da5c73f3793b224696617a2a21def7500ba18d6

https://git.kernel.org/stable/c/49c2c5924552e1d2f8b635dee663abebbb7cf63b

https://git.kernel.org/stable/c/a2a33e87a2ffce3046c574d24eec4390c27c9365

https://git.kernel.org/stable/c/b0e2333a231107adedd38c6fcfe1adc6162716fc

https://git.kernel.org/stable/c/d68f753d89f4ef6e410d7e8b7e8ab2fdde921b80

https://git.kernel.org/stable/c/dd110cc00cf854a8ecd8d003127a4178c28574ea

https://git.kernel.org/stable/c/f837c7b85143a7c54140ff41ad5c076b73cd9933

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