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Fencer Intel
medium 4.0

CVE-2011-3638 json

fs/ext4/extents.c in the Linux kernel before 3.0 does not mark a modified extent as dirty in certain cases of extent splitting, which allow…

published 2013-03-01 13 y ago modified 2026-06-16 4 mo ago also EUVD-2011-3597

cvss
4.0
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 29%
public exploits
0
none known

Summary

fs/ext4/extents.c in the Linux kernel before 3.0 does not mark a modified extent as dirty in certain cases of extent splitting, which allows local users to cause a denial of service (system crash) via vectors involving ext4 umount and mount operations.

Patch / fix

  • linux linux_kernel 3.0
  • kernel RHEL 5 2.6.18-274.18.1.el5
  • kernel-PAE RHEL 5 2.6.18-274.18.1.el5
  • kernel-xen RHEL 5 2.6.18-274.18.1.el5
  • kernel-kdump RHEL 5 2.6.18-274.18.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-274.18.1.el5
  • kernel RHEL 6 2.6.32-220.el6
  • perf RHEL 6 2.6.32-220.el6
  • python-perf RHEL 6 2.6.32-220.el6

red hat advisories RHSA-2012:0107RHSA-2012:0517RHSA-2012:0116RHSA-2011:1530

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-2011-3638 updated cvss 4.0

kernel: ext4: ext4_ext_insert_extent() kernel oops

  • Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-274.18.1.el5, kernel-PAE 2.6.18-274.18.1.el5, kernel-xen 2.6.18-274.18.1.el5, kernel-kdump 2.6.18-274.18.1.el5, kernel-debuginfo-common 2.6.18-274.18.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-274.18.1.el5, kernel-PAE 2.6.18-274.18.1.el5, kernel-xen 2.6.18-274.18.1.el5, kernel-debuginfo-common 2.6.18-274.18.1.el5
    fixed: vendor fix RHSA-2012:0107
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-220.el6, kernel 2.6.32-220.el6, kernel-firmware 2.6.32-220.el6, kernel-debuginfo-common-i686 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) kernel 2.6.32-220.el6, python-perf 2.6.32-220.el6, kernel-debuginfo-common-i686 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6
    fixed: vendor fix RHSA-2011:1530
  • Red Hat Enterprise Linux EUS (v. 5.6 server) kernel 2.6.18-238.37.1.el5, kernel-PAE 2.6.18-238.37.1.el5, kernel-xen 2.6.18-238.37.1.el5, kernel-kdump 2.6.18-238.37.1.el5, kernel-debuginfo-common 2.6.18-238.37.1.el5
    fixed: vendor fix RHSA-2012:0517
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-220.el6, kernel 2.6.32-220.el6, kernel-firmware 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel 2.6.32-220.el6, python-perf 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-220.el6, kernel 2.6.32-220.el6, kernel-kdump 2.6.32-220.el6, kernel-firmware 2.6.32-220.el6, kernel-bootwrapper 2.6.32-220.el6, kernel-debuginfo-common-i686 2.6.32-220.el6, +3 more
    fixed: vendor fix RHSA-2011:1530
  • Red Hat Enterprise Linux Server EUS (v. 6.1) perf 2.6.32-131.25.1.el6, kernel 2.6.32-131.25.1.el6, kernel-kdump 2.6.32-131.25.1.el6, kernel-firmware 2.6.32-131.25.1.el6, kernel-bootwrapper 2.6.32-131.25.1.el6, kernel-debuginfo-common-i686 2.6.32-131.25.1.el6, +3 more
    fixed: vendor fix RHSA-2012:0116
  • Red Hat Enterprise Linux Server Optional (v. 6) kernel 2.6.32-220.el6, python-perf 2.6.32-220.el6, kernel-debuginfo-common-i686 2.6.32-220.el6, kernel-debuginfo-common-ppc64 2.6.32-220.el6, kernel-debuginfo-common-s390x 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6 Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-220.el6, kernel 2.6.32-220.el6, kernel-firmware 2.6.32-220.el6, kernel-debuginfo-common-i686 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6 Red Hat Enterprise Linux Workstation Optional (v. 6) kernel 2.6.32-220.el6, python-perf 2.6.32-220.el6, kernel-debuginfo-common-i686 2.6.32-220.el6, kernel-debuginfo-common-x86_64 2.6.32-220.el6
    fixed: vendor fix RHSA-2011:1530
  • Red Hat Enterprise Linux 4 kernel
    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

0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:L/AC:H/Au:N/C:N/I:N/A:C

Classification

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.