Bug 2069625 (CVE-2022-1050)

Summary:	CVE-2022-1050 QEMU: pvrdma: use-after-free issue in pvrdma_exec_cmd()
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	berrange, beuc, cfergeau, crobinso, eglynn, jen, jferlan, jforbes, jjoyce, jmaloy, knoel, lhh, lkundrak, m.a.young, mburns, mkenneth, mrezanin, mst, ondrejj, pbonzini, philmd, ribarry, rjones, spower, virt-maint, virt-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	qemu 8.0.0	Doc Type:	---
Doc Text:	A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-03-29 14:31:14 UTC	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:	2069627
Bug Blocks:	2066710, 2069629

Description Mauro Matteo Cascella 2022-03-29 09:45:38 UTC

Guest driver might execute HW commands when shared buffers are not yet allocated, potentially leading to a use-after-free condition.

Upstream patch:
https://lists.nongnu.org/archive/html/qemu-devel/2022-04/msg00273.html

Comment 1 Mauro Matteo Cascella 2022-03-29 09:58:04 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 2069627]

Comment 2 Product Security DevOps Team 2022-03-29 14:31:11 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-1050

Comment 3 Mauro Matteo Cascella 2023-01-02 11:21:08 UTC

This is yet to be merged upstream:
https://lists.nongnu.org/archive/html/qemu-devel/2022-12/msg00943.html

Comment 4 Sylvain Beucler 2023-03-09 15:52:08 UTC

Hi. This appears to have been merged a few days later :)
https://gitlab.com/qemu-project/qemu/-/commit/31c4b6fb0293e359f9ef8a61892667e76eea4c99