Bug 1772538 (CVE-2019-18786)

Summary:	CVE-2019-18786 kernel: memory disclosure in rcar_drif_g_fmt_sdr_cap in drivers/media/platform/rcar_drif.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
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:	2020-01-28 08:09:29 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:	1772539
Bug Blocks:	1772540

Description Guilherme de Almeida Suckevicz 2019-11-14 15:04:24 UTC

In the Linux kernel through 5.3.8, f->fmt.sdr.reserved is uninitialized in rcar_drif_g_fmt_sdr_cap in drivers/media/platform/rcar_drif.c, which could cause a memory disclosure problem.

Reference:
https://patchwork.linuxtv.org/patch/59542/

Comment 1 Guilherme de Almeida Suckevicz 2019-11-14 15:04:46 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1772539]

Comment 2 Justin M. Forbes 2019-11-14 17:25:27 UTC

rcar_drif depends on ARCH_RENESAS which is not enabled in Fedora.

Comment 3 Wade Mealing 2020-01-24 03:07:49 UTC

The same also for all RHEL based kernels.

Comment 4 Product Security DevOps Team 2020-01-28 08:09:29 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-18786