CVE-2021-47566

In the Linux kernel, the following vulnerability has been resolved: proc/vmcore: fix clearing user buffer by properly using clearuser To clear a user buffer we cannot simply use memset, we have to use clearuser. With a virtio-mem device that registers a vmcorecb and has some logically unplugged...

CVE-2021-47566 proc/vmcore: fix clearing user buffer by properly using clear_user()

In the Linux kernel, the following vulnerability has been resolved: proc/vmcore: fix clearing user buffer by properly using clearuser To clear a user buffer we cannot simply use memset, we have to use clearuser. With a virtio-mem device that registers a vmcorecb and has some logically unplugged...

Null pointer dereference

In the Linux kernel, the following vulnerability has been resolved: nbd: Fix NULL pointer in flushworkqueue Open /dev/nbdX first, the configrefs will be 1 and the pointers in nbddevice are still null. Disconnect /dev/nbdX, then reference a null recvworkq. The protection by configrefs in...