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Fencer Intel
medium 4.9

CVE-2014-3122 json

The try_to_unmap_cluster function in mm/rmap.c in the Linux kernel before 3.14.3 does not properly consider which pages must be locked, whi…

published 2014-05-11 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-3142

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

The try_to_unmap_cluster function in mm/rmap.c in the Linux kernel before 3.14.3 does not properly consider which pages must be locked, which allows local users to cause a denial of service (system crash) by triggering a memory-usage pattern that requires removal of page-table mappings.

Patch / fix

  • linux linux_kernel 3.14.3
  • linux Debian 14, Debian 13, Debian 12 3.14.4-1

debian advisories DEBIAN-CVE-2014-3122

  • linux Ubuntu 14.04 LTS 3.13.0-29.53

ubuntu advisories UBUNTU-CVE-2014-3122

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 RHEL 6 2.6.32-504.el6
  • perf RHEL 6 2.6.32-504.el6
  • python-perf RHEL 6 2.6.32-504.el6
  • kernel-kdump RHEL 6 2.6.32-504.el6
  • kernel-firmware RHEL 6 2.6.32-504.el6
  • kernel-bootwrapper RHEL 6 2.6.32-504.el6
  • kernel-abi-whitelists RHEL 6 2.6.32-504.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-504.el6

red hat advisories RHSA-2014:1392RHSA-2014:0557

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-2014-3122 updated cvss 4.9

Kernel: mm: try_to_unmap_cluster() should lock_page() before mlocking

  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-abi-whitelists 2.6.32-504.el6, kernel-debuginfo-common-i686 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-504.el6, kernel-debuginfo-common-i686 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-abi-whitelists 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, kernel-kdump 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-bootwrapper 2.6.32-504.el6, kernel-abi-whitelists 2.6.32-504.el6, +4 more Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-504.el6, kernel-debuginfo-common-i686 2.6.32-504.el6, kernel-debuginfo-common-ppc64 2.6.32-504.el6, kernel-debuginfo-common-s390x 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-504.el6, kernel 2.6.32-504.el6, kernel-firmware 2.6.32-504.el6, kernel-abi-whitelists 2.6.32-504.el6, kernel-debuginfo-common-i686 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-504.el6, kernel-debuginfo-common-i686 2.6.32-504.el6, kernel-debuginfo-common-x86_64 2.6.32-504.el6
    fixed: vendor fix RHSA-2014:1392
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.33-rt32.34.el6rt, kernel-rt-trace 3.10.33-rt32.34.el6rt, kernel-rt-vanilla 3.10.33-rt32.34.el6rt, kernel-rt-firmware 3.10.33-rt32.34.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.33-rt32.34.el6rt
    fixed: vendor fix RHSA-2014:0557
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 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

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
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.