Bug 1619846 (CVE-2018-14625)

Summary:	CVE-2018-14625 kernel: use-after-free Read in vhost_transport_send_pkt
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, airlied, aquini, bhu, blc, bskeggs, dbaker, dhoward, esammons, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, john.j5live, jokerman, jonathan, josef, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, lwang, matt, mchehab, mcressma, mjg59, mlangsdo, mvanderw, nmurray, plougher, rt-maint, rvrbovsk, skozina, slawomir, steved, sthangav, trankin, williams, wmealing, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found where an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. A race condition between connect() and close() function may allow an attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly impersonate AF_VSOCK messages destined to other clients or leak kernel memory.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 13:19:04 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:	1619847, 1619848, 1619849, 1623776, 1642210, 1642211, 1772238, 1772239, 1772240, 1772241
Bug Blocks:	1619850

Description Laura Pardo 2018-08-21 21:53:33 UTC

A flaw was found in Linux Kernel in which an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest.  A race condition between connect() and close() function may allow an attacker using the AF_VSOCK protocol to gather a 4 byte information leak or possibly intercept or corrupt AF_VSOCK messages destined to other clients.


Introduced by:
https://github.com/torvalds/linux/commit/433fc58e6bf2c8bd97e57153ed28e64fd78207b8

References:
https://syzkaller.appspot.com/bug?extid=bd391451452fb0b93039

Comment 1 Laura Pardo 2018-08-21 21:54:34 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1619847]

Comment 7 errata-xmlrpc 2019-08-06 12:04:16 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2029

Comment 8 errata-xmlrpc 2019-08-06 12:06:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2043 https://access.redhat.com/errata/RHSA-2019:2043

Comment 9 Product Security DevOps Team 2019-08-06 13:19:04 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-2018-14625

Comment 13 errata-xmlrpc 2019-12-10 12:02:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:4154 https://access.redhat.com/errata/RHSA-2019:4154