A buffer overflow flaw was found, in versions from 2.6.34 to 5.2.x, in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.0 | 7.2 | High | CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H |
| Product | Vendor | Version |
|---|---|---|
| Linux kernel | Linux Kernel | WCD9326 |