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Fencer Intel
medium 5.5

CVE-2014-8559 json

The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the semantics of rename_lock, which allows…

published 2014-11-10 11 y ago modified 2026-06-17 4 mo ago also EUVD-2014-8396

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

The d_walk function in fs/dcache.c in the Linux kernel through 3.17.2 does not properly maintain the semantics of rename_lock, which allows local users to cause a denial of service (deadlock and system hang) via a crafted application.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 3.16.7-ckt4-1

debian advisories DEBIAN-CVE-2014-8559

  • linux Ubuntu 14.04 LTS 3.13.0-46.75
  • linux-lts-utopic Ubuntu 14.04 LTS 3.16.0-31.41~14.04.1

ubuntu advisories UBUNTU-CVE-2014-8559

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt RHEL 7 EXTRAS_RT 3.10.0-229.20.1.rt56.141.14.el7_1
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-229.20.1.rt56.141.14.el7_1
  • kernel-rt-debuginfo-common-x86_64 RHEL 7 EXTRAS_RT 3.10.0-229.20.1.rt56.141.14.el7_1
  • kernel RHEL 7 3.10.0-229.20.1.el7
  • kernel RHEL 7 3.10.0-229.20.1.ael7b
  • perf RHEL 7 3.10.0-229.20.1.el7
  • perf RHEL 7 3.10.0-229.20.1.ael7b
  • python-perf RHEL 7 3.10.0-229.20.1.el7

red hat advisories RHSA-2015:1977RHSA-2015:1978RHSA-2015:1976

  • kernel-ec2 SLE Module for Public Cloud 12 3.12.38-44.1
  • kernel-xen SLES for SAP 12, SLES 12, SLED 12 3.12.38-44.1
  • kernel-syms SLES for SAP 12, SLES 12, SLED 12 3.12.38-44.1
  • kernel-source SLES for SAP 12, SLES 12, SLED 12 3.12.38-44.1
  • kernel-default SLES for SAP 12, SLES 12, SLED 12 +1 more 3.12.38-44.1
  • kernel-obs-build SLE Software Development Kit 12 3.12.38-44.1
  • kgraft-patch-SLE12_Update_3 SLE Live Patching 12 1-2.2

suse advisories SUSE-SU-2015:0529-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-8559 updated cvss 4.0

kernel: fs: deadlock due to incorrect usage of rename_lock

  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-229.20.1.el7, kernel 3.10.0-229.20.1.el7, kernel-tools 3.10.0-229.20.1.el7, kernel-tools-libs 3.10.0-229.20.1.el7, kernel-abi-whitelists 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7 Red Hat Enterprise Linux Client Optional (v. 7) python-perf 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-229.20.1.el7, kernel 3.10.0-229.20.1.el7, kernel-tools 3.10.0-229.20.1.el7, kernel-tools-libs 3.10.0-229.20.1.el7, kernel-abi-whitelists 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-perf 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7
    fixed: vendor fix RHSA-2015:1978
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-229.20.1.rt56.141.14.el7_1, kernel-rt-trace 3.10.0-229.20.1.rt56.141.14.el7_1, kernel-rt-debuginfo-common-x86_64 3.10.0-229.20.1.rt56.141.14.el7_1
    fixed: vendor fix RHSA-2015:1977
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-229.20.1.el7, kernel 3.10.0-229.20.1.el7, perf 3.10.0-229.20.1.ael7b, kernel 3.10.0-229.20.1.ael7b, kernel-kdump 3.10.0-229.20.1.el7, kernel-tools 3.10.0-229.20.1.el7, +11 more Red Hat Enterprise Linux Server Optional (v. 7) python-perf 3.10.0-229.20.1.el7, python-perf 3.10.0-229.20.1.ael7b, kernel-debuginfo-common-ppc64 3.10.0-229.20.1.el7, kernel-debuginfo-common-s390x 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-229.20.1.ael7b Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-229.20.1.el7, kernel 3.10.0-229.20.1.el7, kernel-tools 3.10.0-229.20.1.el7, kernel-tools-libs 3.10.0-229.20.1.el7, kernel-abi-whitelists 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) python-perf 3.10.0-229.20.1.el7, kernel-debuginfo-common-x86_64 3.10.0-229.20.1.el7
    fixed: vendor fix RHSA-2015:1978
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-229.rt56.162.el6rt, kernel-rt-trace 3.10.0-229.rt56.162.el6rt, kernel-rt-vanilla 3.10.0-229.rt56.162.el6rt, kernel-rt-firmware 3.10.0-229.rt56.162.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-229.rt56.162.el6rt
    fixed: vendor fix RHSA-2015:1976
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • debian.org http://www.debian.org/security/2015/dsa-3170 referenced PoC, tagged "exploit" by a source, unverified
  • lkml.org https://lkml.org/lkml/2014/10/26/116 referenced PoC, tagged "exploit" by a source, unverified
  • lkml.org https://lkml.org/lkml/2014/10/25/171 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.