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)
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
unspecified
Other Other
: P4 - Low : Normal
: ---
Assigned To: Michal Marek
Security Team bot
https://smash.suse.de/issue/191468/
CVSSv2:SUSE:CVE-2017-14156:1.7:(AV:L/...
:
Depends on:
Blocks:
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Reported: 2017-09-06 07:22 UTC by Alexander Bergmann
Modified: 2017-09-21 14:35 UTC (History)
1 user (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


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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&m=150401461613306&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&m=150453196710422&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.