CVE-2018-16847

Publication date 2 November 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	18.10 cosmic	Fixed 1:2.12+dfsg-3ubuntu8.1
	18.04 LTS bionic	Fixed 1:2.11+dfsg-1ubuntu7.8
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected
qemu-kvm	18.10 cosmic	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

Notes

mdeslaur

looks like it was introduced by: https://git.qemu.org/?p=qemu.git;a=commit;h=a896f7f26a1a0417322463439825073c1a917e41

Patch details

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

Package	Patch details
qemu	Other: https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00200.html Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=5e3c0220d7e4f0361c4d36c697a8842f2b583402

Severity score breakdown

Parameter	Value
Base score	7.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3826-1
QEMU vulnerabilities
26 November 2018