The sclp_ctl_ioctl_sccb function in drivers/s390/char/sclp_ctl.c in the Linux kernel before 4.6 allows local users to obtain sensitive information from kernel memory by changing a certain length value.
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1352559]
kernel-4.6.4-201.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.