CVE-2017-16845

Publication date 17 November 2017

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

10.0 · Critical

Score breakdown

Description

hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.

Read the notes from the security team

Status

Package Ubuntu Release Status
qemu 18.04 LTS bionic
Fixed 1:2.11+dfsg-1ubuntu7.1
17.10 artful
Fixed 1:2.10+dfsg-0ubuntu3.5
17.04 zesty Ignored end of life
16.04 LTS xenial
Fixed 1:2.5+dfsg-5ubuntu10.22
14.04 LTS trusty
Not affected
qemu-kvm 18.04 LTS bionic Not in release
17.10 artful Not in release
17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes

mdeslaur

trusty has a fixed-size queue, doesn't look like an issue.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

Parameter Value
Base score 10.0 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references