The storageVolUpload function in storage/storage_driver.c in libvirt before 1.2.11 does not check a certain return value, which allows local users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted offset value in a "virsh vol-upload" command.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 20.7%