CVE-2022-50163 ax25: fix incorrect dev_tracker usage

In the Linux kernel, the following vulnerability has been resolved: ax25: fix incorrect devtracker usage While investigating a separate rose issue 1, and enabling CONFIGNETDEVREFCNTTRACKER=y, Bernard reported an orthogonal ax25 issue 2 An ax25dev can be used by one or many struct ax25cb. We thus...

CVE-2022-50163

CVE-2022-50163 concerns a Linux kernel fix for ax25: fix incorrect dev_tracker usage. The root cause was that an ax25_dev could be used by one or more ax25_cb structures, requiring separate dev_tracker per ax25_cb. The patch introduces per-structure tracking to prevent reference tracker mismanage...