CVE-2020-10717
Published: 4 May 2020
A potential DoS flaw was found in the virtio-fs shared file system daemon (virtiofsd) implementation of the QEMU version >= v5.0. Virtio-fs is meant to share a host file system directory with a guest via virtio-fs device. If the guest opens the maximum number of file descriptors under the shared directory, a denial of service may occur. This flaw allows a guest user/process to cause this denial of service on the host.
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced in 5.0 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| eoan |
Not vulnerable
(code not present)
|
|
| focal |
Not vulnerable
(code not present)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
qemu-kvm Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |