CVE-2017-14340

low-risk
Published 2017-09-15

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.

Do I need to act?

-
0.04% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (16)

Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3...
Mailing List http://seclists.org/oss-sec/2017/q3/436
http://www.debian.org/security/2017/dsa-3981
Release Notes http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2
Third Party Advisory http://www.securityfocus.com/bid/100851
https://access.redhat.com/errata/RHSA-2017:2918
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1491344
Issue Tracking https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65c...
Issue Tracking http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3...
Mailing List http://seclists.org/oss-sec/2017/q3/436
http://www.debian.org/security/2017/dsa-3981
Release Notes http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2
Third Party Advisory http://www.securityfocus.com/bid/100851
https://access.redhat.com/errata/RHSA-2017:2918
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1491344
Issue Tracking https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65c...
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal