kernel: vt_ioctl: fix array_index_nospec in vt_setactivate

A vulnerability was found in the Linux kernel's vtioctl subsystem, where the vtsetactivate function can lead to a transient integer underflow due to improper handling of the vsa.console value. The vulnerability arises when an out-of-bounds value is decreased before being sanitized using...

SUSE CVE-2022-48804

In the Linux kernel, the following vulnerability has been resolved: vtioctl: fix arrayindexnospec in vtsetactivate arrayindexnospec ensures that an out-of-bounds value is set to zero on the transient path. Decreasing the value by one afterwards causes a transient integer underflow. vsa.console...