Bug 1777452 (CVE-2019-18810)

Summary:	CVE-2019-18810 kernel: memory leak in komeda_wb_connector_add() function in drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.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, 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, qzhao, 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:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-04-17 07:44:11 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:	1777453
Bug Blocks:	1777491

Description Dhananjay Arunesh 2019-11-27 15:36:52 UTC

A memory leak in the komeda_wb_connector_add() function in drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c in the Linux kernel allows attackers to cause a denial of service (memory consumption) by triggering drm_writeback_connector_init() failures.

Reference:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.8
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a0ecd6fdbf5d648123a7315c695fb6850d702835

Comment 1 Dhananjay Arunesh 2019-11-27 15:37:21 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1777453]

Comment 2 Justin M. Forbes 2019-12-02 14:33:00 UTC

This was fixed for Fedora with the 5.3.8 stable kernel updates.