ID CVE-2016-6198
Summary The filesystem layer in the Linux kernel before 4.5.5 proceeds with post-rename operations after an OverlayFS file is renamed to a self-hardlink, which allows local users to cause a denial of service (system crash) via a rename system call, related to fs/namei.c and fs/open.c.
References
Vulnerable Configurations
  • Linux Kernel 4.5.4
    cpe:2.3:o:linux:linux_kernel:4.5.4
  • Oracle Linux 6.0
    cpe:2.3:o:oracle:linux:6.0
  • cpe:2.3:a:oracle:vm_server:3.4
    cpe:2.3:a:oracle:vm_server:3.4
CVSS
Base: 4.9 (as of 29-09-2016 - 12:54)
Impact:
Exploitability:
CWE CWE-284
CAPEC
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE NONE COMPLETE
redhat via4
advisories
  • bugzilla
    id 1349886
    title CVE-2016-4998 kernel: out of bounds reads when processing IPT_SO_SET_REPLACE setsockopt
    oval
    AND
    • OR
      • comment Red Hat Enterprise Linux 7 Client is installed
        oval oval:com.redhat.rhsa:tst:20140675001
      • comment Red Hat Enterprise Linux 7 Server is installed
        oval oval:com.redhat.rhsa:tst:20140675002
      • comment Red Hat Enterprise Linux 7 Workstation is installed
        oval oval:com.redhat.rhsa:tst:20140675003
      • comment Red Hat Enterprise Linux 7 ComputeNode is installed
        oval oval:com.redhat.rhsa:tst:20140675004
    • OR
      • AND
        • comment kernel is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847023
        • comment kernel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842006
      • AND
        • comment kernel-abi-whitelists is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847007
        • comment kernel-abi-whitelists is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20131645028
      • AND
        • comment kernel-bootwrapper is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847033
        • comment kernel-bootwrapper is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842010
      • AND
        • comment kernel-debug is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847025
        • comment kernel-debug is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842012
      • AND
        • comment kernel-debug-devel is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847009
        • comment kernel-debug-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842014
      • AND
        • comment kernel-devel is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847011
        • comment kernel-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842016
      • AND
        • comment kernel-doc is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847005
        • comment kernel-doc is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842024
      • AND
        • comment kernel-headers is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847021
        • comment kernel-headers is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842008
      • AND
        • comment kernel-kdump is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847013
        • comment kernel-kdump is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842018
      • AND
        • comment kernel-kdump-devel is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847017
        • comment kernel-kdump-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842020
      • AND
        • comment kernel-tools is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847029
        • comment kernel-tools is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20140678010
      • AND
        • comment kernel-tools-libs is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847027
        • comment kernel-tools-libs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20140678012
      • AND
        • comment kernel-tools-libs-devel is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847031
        • comment kernel-tools-libs-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20140678020
      • AND
        • comment perf is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847015
        • comment perf is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20100842022
      • AND
        • comment python-perf is earlier than 0:3.10.0-327.36.1.el7
          oval oval:com.redhat.rhsa:tst:20161847019
        • comment python-perf is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20111849018
    rhsa
    id RHSA-2016:1847
    released 2016-09-14
    severity Important
    title RHSA-2016:1847: kernel security, bug fix, and enhancement update (Important)
  • bugzilla
    id 1366538
    title kernel-rt: update to the RHEL7.2.z batch#7 source tree
    oval
    AND
    • OR
      • comment Red Hat Enterprise Linux 7 Client is installed
        oval oval:com.redhat.rhsa:tst:20140675001
      • comment Red Hat Enterprise Linux 7 Server is installed
        oval oval:com.redhat.rhsa:tst:20140675002
      • comment Red Hat Enterprise Linux 7 Workstation is installed
        oval oval:com.redhat.rhsa:tst:20140675003
      • comment Red Hat Enterprise Linux 7 ComputeNode is installed
        oval oval:com.redhat.rhsa:tst:20140675004
    • OR
      • AND
        • comment kernel-rt is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875023
        • comment kernel-rt is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727006
      • AND
        • comment kernel-rt-debug is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875015
        • comment kernel-rt-debug is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727014
      • AND
        • comment kernel-rt-debug-devel is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875021
        • comment kernel-rt-debug-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727016
      • AND
        • comment kernel-rt-debug-kvm is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875009
        • comment kernel-rt-debug-kvm is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152411008
      • AND
        • comment kernel-rt-devel is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875011
        • comment kernel-rt-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727012
      • AND
        • comment kernel-rt-doc is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875005
        • comment kernel-rt-doc is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727022
      • AND
        • comment kernel-rt-kvm is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875007
        • comment kernel-rt-kvm is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152411024
      • AND
        • comment kernel-rt-trace is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875013
        • comment kernel-rt-trace is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727008
      • AND
        • comment kernel-rt-trace-devel is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875019
        • comment kernel-rt-trace-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20150727010
      • AND
        • comment kernel-rt-trace-kvm is earlier than 0:3.10.0-327.36.1.rt56.237.el7
          oval oval:com.redhat.rhsa:tst:20161875017
        • comment kernel-rt-trace-kvm is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152411014
    rhsa
    id RHSA-2016:1875
    released 2016-09-14
    severity Important
    title RHSA-2016:1875: kernel-rt security and bug fix update (Important)
rpms
  • kernel-0:3.10.0-327.36.1.el7
  • kernel-abi-whitelists-0:3.10.0-327.36.1.el7
  • kernel-bootwrapper-0:3.10.0-327.36.1.el7
  • kernel-debug-0:3.10.0-327.36.1.el7
  • kernel-debug-devel-0:3.10.0-327.36.1.el7
  • kernel-devel-0:3.10.0-327.36.1.el7
  • kernel-doc-0:3.10.0-327.36.1.el7
  • kernel-headers-0:3.10.0-327.36.1.el7
  • kernel-kdump-0:3.10.0-327.36.1.el7
  • kernel-kdump-devel-0:3.10.0-327.36.1.el7
  • kernel-tools-0:3.10.0-327.36.1.el7
  • kernel-tools-libs-0:3.10.0-327.36.1.el7
  • kernel-tools-libs-devel-0:3.10.0-327.36.1.el7
  • perf-0:3.10.0-327.36.1.el7
  • python-perf-0:3.10.0-327.36.1.el7
  • kernel-rt-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-debug-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-debug-devel-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-debug-kvm-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-devel-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-doc-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-kvm-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-trace-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-trace-devel-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-rt-trace-kvm-0:3.10.0-327.36.1.rt56.237.el7
  • kernel-0:3.10.0-514.el7
  • kernel-abi-whitelists-0:3.10.0-514.el7
  • kernel-bootwrapper-0:3.10.0-514.el7
  • kernel-debug-0:3.10.0-514.el7
  • kernel-debug-devel-0:3.10.0-514.el7
  • kernel-devel-0:3.10.0-514.el7
  • kernel-doc-0:3.10.0-514.el7
  • kernel-headers-0:3.10.0-514.el7
  • kernel-kdump-0:3.10.0-514.el7
  • kernel-kdump-devel-0:3.10.0-514.el7
  • kernel-tools-0:3.10.0-514.el7
  • kernel-tools-libs-0:3.10.0-514.el7
  • kernel-tools-libs-devel-0:3.10.0-514.el7
  • perf-0:3.10.0-514.el7
  • python-perf-0:3.10.0-514.el7
  • kernel-rt-0:3.10.0-514.rt56.420.el7
  • kernel-rt-debug-0:3.10.0-514.rt56.420.el7
  • kernel-rt-debug-devel-0:3.10.0-514.rt56.420.el7
  • kernel-rt-debug-kvm-0:3.10.0-514.rt56.420.el7
  • kernel-rt-devel-0:3.10.0-514.rt56.420.el7
  • kernel-rt-doc-0:3.10.0-514.rt56.420.el7
  • kernel-rt-kvm-0:3.10.0-514.rt56.420.el7
  • kernel-rt-trace-0:3.10.0-514.rt56.420.el7
  • kernel-rt-trace-devel-0:3.10.0-514.rt56.420.el7
  • kernel-rt-trace-kvm-0:3.10.0-514.rt56.420.el7
refmap via4
bid 91709
confirm
mlist [oss-security] 20160711 Re: cvs request: local DoS using rename syscall on overlayfs on top of xfs to crash the kernel - Linux kernel
sectrack 1036273
Last major update 28-11-2016 - 15:30
Published 06-08-2016 - 16:59
Last modified 31-08-2017 - 21:29
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