CVE-2014-0148

Publication date 29 September 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entries, due to missing bounds checks for block_size and logical_sector_size variables. These are used to derive other fields like 'sectors_per_block' etc. A user able to alter the Qemu disk image could ise this flaw to crash the Qemu instance resulting in DoS.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	14.04 LTS trusty	Not affected
	13.10 saucy	Ignored end of life
	12.10 quantal	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release
qemu-kvm	14.04 LTS trusty	Not in release
	13.10 saucy	Not in release
	12.10 quantal	Not affected
	12.04 LTS precise	Not affected
	10.04 LTS lucid	Not affected

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/2014-03/msg04994.html Upstream: http://git.qemu.org/?p=qemu.git;a=commit;h=1d7678dec4761acdc43439da6ceda41a703ba1a6
qemu-kvm	Other: https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html

Severity score breakdown

CVSS version: CVSS v3.0

Base score 5.5 · Medium

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	5.5 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H