CVE-2017-14156

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-09-05 · updated 2026-06-17
Weakness: CWE-200

Description

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.

Affected products

Linux kernel: through 4.12.10

References

http://www.debian.org/security/2017/dsa-3981
http://www.securityfocus.com/bid/100634
https://github.com/torvalds/linux/pull/441
https://marc.info/?l=linux-kernel&m=150401461613306&w=2
https://marc.info/?l=linux-kernel&m=150453196710422&w=2
https://usn.ubuntu.com/3583-1/
https://usn.ubuntu.com/3583-2/
http://www.debian.org/security/2017/dsa-3981
http://www.securityfocus.com/bid/100634
https://github.com/torvalds/linux/pull/441
https://marc.info/?l=linux-kernel&m=150401461613306&w=2
https://marc.info/?l=linux-kernel&m=150453196710422&w=2

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