NULL pointer dereference in Linux kernel - CVE-2017-14340
Published: September 15, 2017 / Updated: December 7, 2017
Vulnerability identifier: #VU90672
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-14340
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the fs/xfs/xfs_linux.h. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
MRG Realtime
kernel-rt (Red Hat package)
MRG Realtime
kernel-rt (Red Hat package)
How to mitigate CVE-2017-14340
Install update from vendor's website.
Linux kernel - update to 4.13.2
kernel-rt (Red Hat package) - update to 3.10.0-693.5.2.rt56.592.el6rt
kernel-rt (Red Hat package) - update to 3.10.0-693.5.2.rt56.592.el6rt
External 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