CVE-2016-9602
Publication date 31 December 2016
Last updated 25 August 2025
Ubuntu priority
Cvss 3 Severity Score
Description
Qemu before version 2.9 is vulnerable to an improper link following when built with the VirtFS. A privileged user inside guest could use this flaw to access host file system beyond the shared folder and potentially escalating their privileges on a host.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| qemu | ||
| 20.04 LTS focal |
Fixed 1:2.8+dfsg-3ubuntu2.1
|
|
| 18.04 LTS bionic |
Fixed 1:2.8+dfsg-3ubuntu2.1
|
|
| 16.04 LTS xenial |
Fixed 1:2.5+dfsg-5ubuntu10.11
|
|
| 14.04 LTS trusty |
Fixed 2.0.0+dfsg-2ubuntu1.33
|
|
| qemu-kvm | ||
| 20.04 LTS focal | Not in release | |
| 18.04 LTS bionic | Not in release | |
| 16.04 LTS xenial | Not in release | |
| 14.04 LTS trusty | Not in release | |
Patch details
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-3268-1
- QEMU vulnerabilities
- 25 April 2017
- USN-3261-1
- QEMU vulnerabilities
- 20 April 2017