CVE-2020-13253

Publication date 27 May 2020

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

sd_wp_addr in hw/sd/sd.c in QEMU 4.2.0 uses an unvalidated address, which leads to an out-of-bounds read during sdhci_write() operations. A guest OS user can crash the QEMU process.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
qemu	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Fixed 1:4.2-3ubuntu6.4
	19.10 eoan	Ignored end of life
	18.04 LTS bionic	Fixed 1:2.11+dfsg-1ubuntu7.31
	16.04 LTS xenial	Fixed 1:2.5+dfsg-5ubuntu10.45
	14.04 LTS trusty	Fixed 2.0.0+dfsg-2ubuntu1.47+esm1
qemu-kvm	21.04 hirsute	Not in release
	20.10 groovy	Not in release
	20.04 LTS focal	Not in release
	19.10 eoan	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Not in release
	14.04 LTS trusty	Not in release

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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=790762e5487114341cccc5bffcec4cb3c022c3cd

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