Bug 1783547 (CVE-2019-19535)

Summary:	CVE-2019-19535 kernel: information leak bug caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_fd.cdriver
Product:	[Other] Security Response	Reporter:	msiddiqu
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, airlied, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, mchehab, mcressma, mjg59, mlangsdo, nmurray, qzhao, 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:	A flaw was found in the Linux kernel’s implementation of the Peak CANBUS USB device driver. An information leak caused by the device could allow a local attacker to possibly gain private information from uninitialized kernel memory.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-10-25 22:15:07 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:	1783548, 1785510, 1785511, 1785514
Bug Blocks:	1783549

Description msiddiqu 2019-12-13 21:38:45 UTC

A flaw was found in the linux kernels implementation of the Peak CANBUS usb device driver in the linux kernel. An information leak caused by the device could allow for a local attacker to possibly gain private information from uninitialized kernel memory.

Upstream Patch:
  
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30a8beeb3042f49d0537b7050fd21b490166a3d9

References: 

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.9
http://www.openwall.com/lists/oss-security/2019/12/03/4
http://seclists.org/oss-sec/2019/q4/115

Comment 1 msiddiqu 2019-12-13 21:39:09 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1783548]

Comment 2 Justin M. Forbes 2019-12-16 17:18:30 UTC

This was fixed for Fedora with the 5.2.9 stable kernel update.

Comment 4 Wade Mealing 2019-12-20 04:44:19 UTC

This flaw is rated as moderate, its an information leak that only happens once at device creation time, access methods of the information is quite difficult.