Bug 1421995 (CVE-2017-5987)

Summary:	CVE-2017-5987 Qemu: sd: infinite loop issue in multi block transfers
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit, apevec, areis, ayoung, berrange, cfergeau, chrisw, cvsbot-xmlrpc, drjones, dwmw2, imammedo, itamar, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, sclewis, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:07:35 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:	1422001
Bug Blocks:	1401579

Description Prasad Pandit 2017-02-14 09:54:18 UTC

Quick emulator(Qemu) built with the SDHCI device emulation support is vulnerable
to an infinite loop issue. It could occur while doing a multi block SDMA
transfer via 'sdhci_sdma_transfer_multi_blocks' routine.

A privileged user inside guest could use this flaw to crash the Qemu process
resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg02776.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/02/14/8

Comment 2 Prasad Pandit 2017-02-14 09:57:43 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1422001]

Comment 3 Adam Mariš 2017-09-11 08:35:55 UTC

Acknowledgments:

Name: Jiang Xin (Huawei), Wjjzhang (Tencent)