Bug 1057347 – VUL-1: CVE-2017-14156: kernel: sensitive information leak in atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c

Bug 1057347 - (CVE-2017-14156) VUL-1: CVE-2017-14156: kernel: sensitive information leak in atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c

(CVE-2017-14156)
Summary:	VUL-1: CVE-2017-14156: kernel: sensitive information leak in atyfb_ioctl func...

Status:	RESOLVED WONTFIX

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P4 - Low Severity: Normal
Target Milestone:	---
Assigned To:	Michal Marek
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/191468/
Whiteboard:	CVSSv2:SUSE:CVE-2017-14156:1.7:(AV:L/...
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Reported:	2017-09-06 07:22 UTC by Alexander Bergmann
Modified:	2017-09-21 14:35 UTC (History)
CC List:	1 user (show)

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Found By:	Security Response Team
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Description Alexander Bergmann 2017-09-06 07:22:12 UTC

CVE-2017-14156

The atyfb_ioctl function in drivers/video/fbdev/aty/atyfb_base.c in the Linux
kernel through 4.12.10 does not initialize a certain data structure, which
allows local users to obtain sensitive information from kernel stack memory by
reading locations associated with padding bytes.

Upstream fix:
https://github.com/bzolnier/linux/commit/8e75f7a7a00461ef6d91797a60b606367f6e344d

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-14156
http://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-14156.html
https://marc.info/?l=linux-kernel&amp;m=150401461613306&amp;w=2
https://marc.info/?l=linux-kernel&m=150401461613306&w=2
https://marc.info/?l=linux-kernel&m=150453196710422&w=2
https://marc.info/?l=linux-kernel&amp;m=150453196710422&amp;w=2
https://github.com/torvalds/linux/pull/441

Comment 1 Michal Marek 2017-09-07 11:51:14 UTC

We have always blacklisted the atyfb module and since SLE12 we do not even build it.