Bug 1655904 (CVE-2018-9568)

Summary:	CVE-2018-9568 kernel: Memory corruption due to incorrect socket cloning
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	acaringi, airlied, asavkov, bhu, blc, brdeoliv, bskeggs, chorn, dhoward, dvlasenk, ewk, fhrbata, hdegoede, hkrzesin, hwkernel-mgr, iboverma, ichavero, itamar, jarodwilson, jforbes, jglisse, jkacur, joe.lawrence, john.j5live, jonathan, josef, jpoimboe, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, ptalbert, rt-maint, rvrbovsk, slawomir, steved, vdronov, williams
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 possible memory corruption due to a type confusion was found in the Linux kernel in the sk_clone_lock() function in the net/core/sock.c. The possibility of local escalation of privileges cannot be fully ruled out for a local unprivileged attacker.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:43:30 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:	1657117, 1657351, 1657352, 1657353, 1657354, 1657355, 1717809, 1725170, 1725171, 1725172, 1770246, 1770247, 1770249
Bug Blocks:	1655907

Description Andrej Nemec 2018-12-04 09:01:31 UTC

A possible memory corruption due to a type confusion was found in the Linux kernel in the sk_clone_lock() function in the net/core/sock.c. A possibility of local escalation of privileges cannot be fully ruled out for a local unprivileged attacker.

References:

https://source.android.com/security/bulletin/2018-12-01.html#kernel-components

An upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d538fa60bad4f7b23193c89e843797a1cf71ef3

Comment 4 errata-xmlrpc 2019-03-13 18:46:29 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:0514 https://access.redhat.com/errata/RHSA-2019:0514

Comment 5 errata-xmlrpc 2019-03-13 22:58:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:0512 https://access.redhat.com/errata/RHSA-2019:0512

Comment 8 errata-xmlrpc 2019-09-10 13:46:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.4 Extended Update Support

Via RHSA-2019:2696 https://access.redhat.com/errata/RHSA-2019:2696

Comment 9 errata-xmlrpc 2019-09-11 09:09:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise MRG 2

Via RHSA-2019:2730 https://access.redhat.com/errata/RHSA-2019:2730

Comment 10 errata-xmlrpc 2019-09-11 15:29:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:2736 https://access.redhat.com/errata/RHSA-2019:2736

Comment 12 Petr Matousek 2019-11-06 13:19:28 UTC

Mitigation:

The currently known attack vector uses IPv6 for exploitation. If IPv6 is not needed on the host, disabling it mitigates this attack vector. Please see https://access.redhat.com/solutions/8709 for instructions on how to disable IPv6 in Red Hat Enterprise Linux.

Comment 14 errata-xmlrpc 2019-11-26 11:52:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.5 Extended Update Support

Via RHSA-2019:3967 https://access.redhat.com/errata/RHSA-2019:3967

Comment 15 errata-xmlrpc 2019-12-03 08:11:28 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.5 Advanced Update Support

Via RHSA-2019:4056 https://access.redhat.com/errata/RHSA-2019:4056

Comment 16 errata-xmlrpc 2019-12-10 11:52:11 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.2 Telco Extended Update Support
  Red Hat Enterprise Linux 7.2 Advanced Update Support
  Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions

Via RHSA-2019:4164 https://access.redhat.com/errata/RHSA-2019:4164

Comment 17 errata-xmlrpc 2019-12-10 11:58:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.3 Telco Extended Update Support
  Red Hat Enterprise Linux 7.3 Advanced Update Support
  Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions

Via RHSA-2019:4159 https://access.redhat.com/errata/RHSA-2019:4159

Comment 18 errata-xmlrpc 2019-12-17 09:38:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6.6 Advanced Update Support

Via RHSA-2019:4255 https://access.redhat.com/errata/RHSA-2019:4255