Bug 1743544 (CVE-2019-15211)

Summary:	CVE-2019-15211 kernel: use-after-free in drivers/media/v4l2-core/v4l2-dev.c
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, apmukher, 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
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 use-after-free flaw was found in the Linux kernel. A local attacker who was able to disconect a USB raremono v4l radio device could trigger a use-after-free condition where they could abuse this flaw to corrupt memory, crash the system, or escalate privileges	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-05-06 10:25:36 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:	1743545
Bug Blocks:	1743546

Description Dhananjay Arunesh 2019-08-20 08:14:06 UTC

A vulnerability was found in the Linux kernel. There is a use-after-free caused by a malicious USB device in the drivers/media/v4l2-core/v4l2-dev.c driver because drivers/media/radio/radio-raremono.c does not properly allocate memory.

Reference:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.6
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c666355e60ddb4748ead3bdd983e3f7f2224aaf0
https://syzkaller.appspot.com/bug?id=775f90f43cfd6f8ac6c15251ce68e604453da226

Comment 1 Dhananjay Arunesh 2019-08-20 08:14:23 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1743545]

Comment 2 Justin M. Forbes 2019-08-20 12:43:23 UTC

This was fixed for Fedora with the 5.2.6 stable updates.

Comment 6 Eric Christensen 2020-02-21 20:24:45 UTC

Statement:

This module is not included in the Red Hat Enterprise Linux kernels.