Inappropriate coding practices In linux

Description

A NULL pointer dereference vulnerability was found in the Linux kernel's RAID5 implementation. In raid5_store_group_thread_cnt(), when mddev->private (conf) is NULL, the function still calls raid5_quiesce() which re-reads mddev->private and dereferences it. This causes a kernel crash when accessing conf->quiesce or calling wake_up() on the NULL pointer's wait queue.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Package
Affected version
Patched versions