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Fencer Vulns
medium 4.4

CVE-2007-3740 json

The CIFS filesystem in the Linux kernel before 2.6.22, when Unix extension support is enabled, does not honor the umask of a process, which…

published 2007-09-14 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3724

cvss
4.4
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 32%
public exploits
0
none known

Summary

The CIFS filesystem in the Linux kernel before 2.6.22, when Unix extension support is enabled, does not honor the umask of a process, which allows local users to gain privileges.

Patch / fix

  • kernel RHEL 4 2.6.9-55.0.12.EL
  • kernel-smp RHEL 4 2.6.9-55.0.12.EL
  • kernel-xenU RHEL 4 2.6.9-55.0.12.EL
  • kernel-hugemem RHEL 4 2.6.9-55.0.12.EL
  • kernel-largesmp RHEL 4 2.6.9-55.0.12.EL
  • kernel RHEL 5 2.6.18-8.1.10.el5
  • kernel-PAE RHEL 5 2.6.18-8.1.10.el5
  • kernel-xen RHEL 5 2.6.18-8.1.10.el5

red hat advisories RHSA-2007:0939RHSA-2007:0705

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-2007-3740 updated

CIFS should honor umask

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-8.1.10.el5, kernel-PAE 2.6.18-8.1.10.el5, kernel-xen 2.6.18-8.1.10.el5, kernel-kdump 2.6.18-8.1.10.el5, kernel-debuginfo-common 2.6.18-8.1.10.el5
    fixed: vendor fix RHSA-2007:0705
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-55.0.12.EL, kernel-smp 2.6.9-55.0.12.EL, kernel-xenU 2.6.9-55.0.12.EL, kernel-hugemem 2.6.9-55.0.12.EL, kernel-largesmp 2.6.9-55.0.12.EL
    fixed: vendor fix RHSA-2007:0939
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-8.1.10.el5, kernel-PAE 2.6.18-8.1.10.el5, kernel-xen 2.6.18-8.1.10.el5, kernel-kdump 2.6.18-8.1.10.el5, kernel-debuginfo-common 2.6.18-8.1.10.el5
    fixed: vendor fix RHSA-2007:0705
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-55.0.12.EL, kernel-smp 2.6.9-55.0.12.EL, kernel-xenU 2.6.9-55.0.12.EL, kernel-hugemem 2.6.9-55.0.12.EL, kernel-largesmp 2.6.9-55.0.12.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-55.0.12.EL, kernel-smp 2.6.9-55.0.12.EL, kernel-xenU 2.6.9-55.0.12.EL, kernel-hugemem 2.6.9-55.0.12.EL, kernel-largesmp 2.6.9-55.0.12.EL Red Hat Enterprise Linux WS version 4 kernel 2.6.9-55.0.12.EL, kernel-smp 2.6.9-55.0.12.EL, kernel-xenU 2.6.9-55.0.12.EL, kernel-hugemem 2.6.9-55.0.12.EL, kernel-largesmp 2.6.9-55.0.12.EL
    fixed: vendor fix RHSA-2007:0939

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

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
Technology feeds

References

Sources

Fencer Vulns 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.