In the Linux kernel, the following vulnerability has been resolved:
ptp: ocp: Fix NULL dereference in Adva board SMA sysfs operations
On Adva boards, SMA sysfs store/get operations can call
_handlesignaloutputs() or _handlesignalinputs() while the irig
and dcf pointers are uninitialized, leading to a NULL pointer
dereference in _handlesignal() and causing a kernel crash. Adva boards
don't use irig or dcf functionality, so add Adva-specific callbacks
ptp_ocp_sma_adva_set_outputs() and ptp_ocp_sma_adva_set_inputs() that
avoid invoking irig or dcf input/output routines.