CVE-2017-14340

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: 2017-09-15 · updated 2026-06-17
Weakness: CWE-476

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.

Affected products

Linux kernel: through 4.13.1

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3cdf540110da4572e3e29bd172087af65cc
http://seclists.org/oss-sec/2017/q3/436
http://www.debian.org/security/2017/dsa-3981
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2
http://www.securityfocus.com/bid/100851
https://access.redhat.com/errata/RHSA-2017:2918
https://bugzilla.redhat.com/show_bug.cgi?id=1491344
https://github.com/torvalds/linux/commit/b31ff3cdf540110da4572e3e29bd172087af65cc
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b31ff3cdf540110da4572e3e29bd172087af65cc
http://seclists.org/oss-sec/2017/q3/436
http://www.debian.org/security/2017/dsa-3981
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.2

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