CVE-2017-14340

Description

The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.

Category

5.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.04%
Vendor Advisory redhat.com Vendor Advisory debian.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/100851 vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2017:2918 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1491344 issue tracking third party advisory patch
https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65cc issue tracking third party advisory patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3cdf540110da4572e3e29bd172087af65cc issue tracking third party advisory patch
http://www.debian.org/security/2017/dsa-3981 vendor advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2 release notes vendor advisory
http://seclists.org/oss-sec/2017/q3/436 mailing list patch mitigation third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-14340?
CVE-2017-14340 has been scored as a medium severity vulnerability.
How to fix CVE-2017-14340?
To fix CVE-2017-14340, 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-2017-14340 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-14340 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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