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low 2.1

CVE-2014-2038 json

The nfs_can_extend_write function in fs/nfs/write.c in the Linux kernel before 3.13.3 relies on a write delegation to extend a write operat…

published 12y ago modified 4mo ago also EUVD-2014-2090

cvss
2.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

The nfs_can_extend_write function in fs/nfs/write.c in the Linux kernel before 3.13.3 relies on a write delegation to extend a write operation without a certain up-to-date verification, which allows local users to obtain sensitive information from kernel memory in opportunistic circumstances by writing to a file in an NFS filesystem and then reading the same file.

Patch / fix

  • linux linux_kernel 3.13.3
  • linux Debian 14, Debian 13, Debian 12 3.13.4-1

debian advisories DEBIAN-CVE-2014-2038

  • kernel RHEL 6 2.6.32-431.11.2.el6
  • perf RHEL 6 2.6.32-431.11.2.el6
  • python-perf RHEL 6 2.6.32-431.11.2.el6
  • kernel-kdump RHEL 6 2.6.32-431.11.2.el6
  • kernel-firmware RHEL 6 2.6.32-431.11.2.el6
  • kernel-bootwrapper RHEL 6 2.6.32-431.11.2.el6
  • kernel-abi-whitelists RHEL 6 2.6.32-431.11.2.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-431.11.2.el6

red hat advisories RHSA-2014:0328

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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-2014-2038 updated cvss 3.3

kernel: nfs: data leak during extended writes

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: no fix available
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-431.11.2.el6, kernel 2.6.32-431.11.2.el6, kernel-firmware 2.6.32-431.11.2.el6, kernel-abi-whitelists 2.6.32-431.11.2.el6, kernel-debuginfo-common-i686 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-431.11.2.el6, python-perf 2.6.32-431.11.2.el6, kernel-debuginfo-common-i686 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-431.11.2.el6, kernel 2.6.32-431.11.2.el6, kernel-firmware 2.6.32-431.11.2.el6, kernel-abi-whitelists 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-431.11.2.el6, python-perf 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-431.11.2.el6, kernel 2.6.32-431.11.2.el6, kernel-kdump 2.6.32-431.11.2.el6, kernel-firmware 2.6.32-431.11.2.el6, kernel-bootwrapper 2.6.32-431.11.2.el6, kernel-abi-whitelists 2.6.32-431.11.2.el6, +4 more Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-431.11.2.el6, python-perf 2.6.32-431.11.2.el6, kernel-debuginfo-common-i686 2.6.32-431.11.2.el6, kernel-debuginfo-common-ppc64 2.6.32-431.11.2.el6, kernel-debuginfo-common-s390x 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-431.11.2.el6, kernel 2.6.32-431.11.2.el6, kernel-firmware 2.6.32-431.11.2.el6, kernel-abi-whitelists 2.6.32-431.11.2.el6, kernel-debuginfo-common-i686 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-431.11.2.el6, python-perf 2.6.32-431.11.2.el6, kernel-debuginfo-common-i686 2.6.32-431.11.2.el6, kernel-debuginfo-common-x86_64 2.6.32-431.11.2.el6
    fixed: vendor fix RHSA-2014:0328
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    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

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
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.