Bug 1416116 (CVE-2017-5550)

Summary:	CVE-2017-5550 kernel: Information leak due to fencepost error in pipe_advance()
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, 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
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2019-06-08 03:06:16 UTC	Type:	---
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1416128
Bug Blocks:

Description Adam Mariš 2017-01-24 15:56:04 UTC

A heap infoleak due to fencepost error in pipe_advance() was found.

Upstream patch:

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9dc6f65bc5e232d1c05fe34b5daadc7e8bbf1fb

CVE assignment:

http://seclists.org/oss-sec/2017/q1/161

Comment 1 Adam Mariš 2017-01-24 16:30:40 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1416128]

Comment 2 Justin M. Forbes 2017-01-24 17:51:55 UTC

This issue was fixed with the 4.9.5 stable release, currently available on all supported Fedora releases.