Bug 1903064 (CVE-2020-28916)

Summary:	CVE-2020-28916 QEMU: e1000e: infinite loop scenario in case of null packet descriptor
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, berrange, cfergeau, dbecker, drjones, imammedo, itamar, jen, jferlan, jforbes, jjoyce, jmaloy, jschluet, knoel, lhh, lpeer, m.a.young, mburns, mcascell, mkenneth, mrezanin, mst, ondrejj, pbonzini, philmd, ribarry, rjones, robinlee.sysu, sclewis, slinaber, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	QEMU 5.2.0	Doc Type:	---
Doc Text:	An infinite loop flaw was found in the e1000e device emulator in QEMU. This issue could occur while receiving packets via the e1000e_write_packet_to_guest() routine, if the receive(RX) descriptor has a NULL buffer address. This flaw allows a privileged guest user to cause a denial of service. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-18 14:37:26 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:	1903066, 1903069, 1903070, 1903071, 1910661
Bug Blocks:	1887771, 1892339

Description Prasad Pandit 2020-12-01 09:06:30 UTC

An infinite loop issue was found in the e1000e device emulator in QEMU. The issue could occur while receiving packets via e1000e_write_packet_to_guest() routine, if the receive(RX) descriptor has NULL buffer address. A privileged guest user may use this flaw to induce a DoS scenario in the host.

Upstream patch:
---------------
  -> https://lists.nongnu.org/archive/html/qemu-devel/2020-11/msg03185.html

Comment 1 Prasad Pandit 2020-12-01 09:06:45 UTC

Acknowledgments:

Name: Cheol-woo Myung

Comment 2 Prasad Pandit 2020-12-01 09:07:44 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1903066]

Comment 5 Prasad Pandit 2020-12-01 12:10:42 UTC

External References:

https://www.openwall.com/lists/oss-security/2020/12/01/2

Comment 6 Mauro Matteo Cascella 2020-12-14 14:11:30 UTC

*** Bug 1893895 has been marked as a duplicate of this bug. ***

Comment 8 Product Security DevOps Team 2021-05-18 14:37:26 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-2020-28916

Comment 9 errata-xmlrpc 2021-05-18 14:51:41 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1762 https://access.redhat.com/errata/RHSA-2021:1762