CVE-2017-16994

Public Exploit

Description

The walk_hugetlb_range function in mm/pagewalk.c in the Linux kernel before 4.14.2 mishandles holes in hugetlb ranges, which allows local users to obtain sensitive information from uninitialized kernel memory via crafted use of the mincore() system call.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 4.80% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3617-1/ vendor advisory
https://usn.ubuntu.com/3619-2/ vendor advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1431 patch issue tracking exploit
https://usn.ubuntu.com/3617-3/ vendor advisory
https://www.exploit-db.com/exploits/43178/ third party advisory vdb entry exploit
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.2 release notes
https://usn.ubuntu.com/3632-1/ vendor advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=373c4557d2aa362702c4c2d41288fb1e54990b7c patch
https://access.redhat.com/errata/RHSA-2018:0502 vendor advisory
https://usn.ubuntu.com/3617-2/ vendor advisory
https://github.com/torvalds/linux/commit/373c4557d2aa362702c4c2d41288fb1e54990b7c patch
https://usn.ubuntu.com/3619-1/ vendor advisory
http://www.securityfocus.com/bid/101969 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2017-16994?
CVE-2017-16994 has been scored as a medium severity vulnerability.
How to fix CVE-2017-16994?
To fix CVE-2017-16994, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-16994 being actively exploited in the wild?
It is possible that CVE-2017-16994 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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