Complete lack of validation of attacker-controlled parameters leads to a buffer over read. The results of the over read are written back to the guest virtual machine=E2=80=99s memory. This vulnerability can be used by an attacker in a virtual machine to read significant amounts of host memory. This vulnerability can be chained with finding number 1 to read arbitrary amounts of data from any address in the vhost_crypto process.
This flaw does not affect the versions of `dpdk` as shipped with Red Hat Enterprise Linux 7 and 8 or the versions embedded in Red Hat Virtualization or the Fast Datapath `openvswitch` package, as they do not enable generic crypto device library support. This causes the vulnerable code in vhost_crypto.c to not be included.
This flaw does not affect Red Hat Ceph Storage 3 and 4 as dpdk (embedded in ceph source rpm) is not built in the packages, therefore the vulnerable code is not available in the resulting RPM and the issue cannot be exploited.
Name: Ryan Hall
Created dpdk tracking bugs for this issue:
Affects: fedora-all [bug 1883276]
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):