CVE-2018-18954

Publication date 15 November 2018

Last updated 25 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

The pnv_lpc_do_eccb function in hw/ppc/pnv_lpc.c in Qemu before 3.1 allows out-of-bounds write or read access to PowerNV memory.

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

Patch details

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

Package	Patch details
qemu	Upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=d07945e78eb6b593cd17a4640c1fc9eb35e3245d

Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3826-1
QEMU vulnerabilities
26 November 2018

Other references