Bug 2232677 (CVE-2023-40360)

Summary:	CVE-2023-40360 QEMU: NVMe: NULL pointer dereference in nvme_directive_receive()
Product:	[Other] Security Response	Reporter:	Zack Miele <zmiele>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ddepaula, jen, jferlan, jmaloy, knoel, mkenneth, mrezanin, mst, pbonzini, virt-maint, ymankad
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	qemu-kvm 8.1.0-rc3	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the virtual nvme device in QEMU. The nvme_directive_receive() function does not check if an endurance group has been configured (set) prior to testing if flexible data placement is enabled, potentially leading to a NULL pointer dereference issue.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2232678, 2232679, 2232680, 2233910
Bug Blocks:	2232676

Description Zack Miele 2023-08-17 21:03:41 UTC

QEMU through 8.0.4 accesses a NULL pointer in nvme_directive_receive in hw/nvme/ctrl.c because there is no check for whether an endurance group is configured before checking whether Flexible Data Placement is enabled.

https://gitlab.com/birkelund/qemu/-/commit/6c8f8456cb0b239812dee5211881426496da7b98
https://gitlab.com/qemu-project/qemu/-/issues/1815
https://www.qemu.org/docs/master/system/security.html

Comment 2 Mauro Matteo Cascella 2023-08-23 17:13:55 UTC

Upstream commit:
https://gitlab.com/qemu-project/qemu/-/commit/6c8f8456cb0b239812dee5211881426496da7b98

Comment 3 Mauro Matteo Cascella 2023-08-23 17:19:20 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 2233910]