In the Linux kernel, the following vulnerability has been resolved: power: sequencing: fix NULL-pointer dereference in pwrseq_unit_new() If memory allocation fails in pwrseq_unit_setup_deps(), pwrseq_unit_put() is called to release the…

Overview

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

power: sequencing: fix NULL-pointer dereference in pwrseq_unit_new()

If memory allocation fails in pwrseq_unit_setup_deps(), pwrseq_unit_put() is called to release the partially initialized unit. However, we've never initialized unit->list and pwrseq_unit_release() will unconditionally call list_del() on it. Initialize unit->list right after allocating the unit struct.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.