Bug 1758239 (CVE-2019-17052)

Summary:	CVE-2019-17052 kernel: unprivileged users able to create RAW sockets in the the AF_AX25 network protocol.
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jschorr, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, rt-maint, rvrbovsk, steved, williams, wmealing
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:	2019-12-06 10:33:29 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:	1758240
Bug Blocks:	1758241

Description Dhananjay Arunesh 2019-10-03 16:29:18 UTC

A vulnerability was found in  ax25_create in net/ax25/af_ax25.c in the AF_AX25 network module in the Linux kernel, does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-0614e2b73768.

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0614e2b73768b502fc32a75349823356d98aae2c	
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0edc3f703f7bcaf550774b5d43ab727bcd0fe06b

Comment 1 Dhananjay Arunesh 2019-10-03 16:29:54 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1758240]

Comment 2 Fedora Update System 2019-10-25 18:07:06 UTC

kernel-5.3.6-100.fc29, kernel-headers-5.3.6-100.fc29, kernel-tools-5.3.6-100.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.

Comment 3 Wade Mealing 2019-12-04 05:53:21 UTC

Red Hat Enterprise Linux does not ship a kernel with support for the AF_AX25 socket type and therefore Red Hat Enterprise Linux is not affected.