Bug 1445340 (CVE-2017-8067)

Summary:	CVE-2017-8067 kernel: virtio_console.c interacts incorrectly with the CONFIG_VMAP_STACK option
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aquini, bhu, dhoward, fhrbata, gansalmon, hwkernel-mgr, iboverma, ichavero, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, madhu.chinakonda, matt, mchehab, mcressma, nmurray, pholasek, plougher, rt-maint, rvrbovsk, 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:	2019-06-08 03:11:23 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:	1445344
Bug Blocks:

Description Adam Mariš 2017-04-25 13:48:38 UTC

drivers/char/virtio_console.c in the Linux kernel 4.9.x and 4.10.x
before 4.10.12 interacts incorrectly with the CONFIG_VMAP_STACK
option, which allows local users to cause a denial of service (system
crash or memory corruption) or possibly have unspecified other impact
by leveraging use of more than one virtual page for a DMA scatterlist.

Upstream patch:

https://github.com/torvalds/linux/commit/c4baad50297d84bde1a7ad45e50c73adae4a2192

Comment 1 Adam Mariš 2017-04-25 13:55:06 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1445344]

Comment 2 Justin M. Forbes 2017-04-25 21:47:57 UTC

Fedora 24 and 25 currently have the 4.10.12 kernel in updates-testing