Bug 1774960 (CVE-2019-19069)

Summary:	CVE-2019-19069 kernel: A memory leak in the fastrpc_dma_buf_attach() function in drivers/misc/fastrpc.c allows for a DoS
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
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:	2020-02-25 16:18:47 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:	1774961
Bug Blocks:	1774962

Description Marian Rehak 2019-11-21 10:40:56 UTC

A memory leak in the fastrpc_dma_buf_attach() function in drivers/misc/fastrpc.c in the Linux kernel before 5.3.9 allows attackers to cause a denial of service (memory consumption) by triggering dma_get_sgtable() failures.

Upstream Issue:

https://github.com/torvalds/linux/commit/fc739a058d99c9297ef6bfd923b809d85855b9a9

Comment 1 Marian Rehak 2019-11-21 10:42:07 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1774961]

Comment 2 Justin M. Forbes 2019-11-21 15:38:38 UTC

This was fixed for Fedora in the 5.3.9 stabler kernel updates.