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

hwmon: (pmbus_core) Fix NULL pointer dereference

Pass i2c_client to _pmbus_is_enabled to drop the assumption
that a regulator device is passed in.

This will fix the issue of a NULL pointer dereference when called from
_pmbus_get_flags.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-53206
• https://git.kernel.org/stable/c/0bd66784274a287beada2933c2c0fa3a0ddae0d7
• https://git.kernel.org/stable/c/7444253cacd92412bc8d33d1c9b5401f52cdf0e2