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Fencer Vulns
medium 6.9

CVE-2008-1669 json

Linux kernel before 2.6.25.2 does not apply a certain protection mechanism for fcntl functionality, which allows local users to (1) execute…

published 2008-05-08 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-1670

cvss
6.9
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

Linux kernel before 2.6.25.2 does not apply a certain protection mechanism for fcntl functionality, which allows local users to (1) execute code in parallel or (2) exploit a race condition to obtain "re-ordered access to the descriptor table."

Patch / fix

  • kernel RHEL 5 2.6.18-53.1.19.el5
  • kernel-PAE RHEL 5 2.6.18-53.1.19.el5
  • kernel-xen RHEL 5 2.6.18-53.1.19.el5
  • kernel-kdump RHEL 5 2.6.18-53.1.19.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-53.1.19.el5
  • kernel RHEL 4 2.6.9-67.0.15.EL
  • kernel-smp RHEL 4 2.6.9-67.0.15.EL
  • kernel-xenU RHEL 4 2.6.9-67.0.15.EL

red hat advisories RHSA-2008:0233RHSA-2008:0237RHSA-2008:0211

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-2008-1669 updated

kernel: add rcu_read_lock() to fcheck() in both dnotify, locks.c and fix fcntl store/load race in locks.c

  • Red Hat Desktop version 3 kernel 2.4.21-57.EL, kernel-smp 2.4.21-57.EL, kernel-BOOT 2.4.21-57.EL, kernel-source 2.4.21-57.EL, kernel-hugemem 2.4.21-57.EL, kernel-unsupported 2.4.21-57.EL, +2 more
    fixed: vendor fix RHSA-2008:0211
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-53.1.19.el5, kernel-PAE 2.6.18-53.1.19.el5, kernel-xen 2.6.18-53.1.19.el5, kernel-kdump 2.6.18-53.1.19.el5, kernel-debuginfo-common 2.6.18-53.1.19.el5
    fixed: vendor fix RHSA-2008:0233
  • Red Hat Enterprise Linux AS version 3 kernel 2.4.21-57.EL, kernel-smp 2.4.21-57.EL, kernel-BOOT 2.4.21-57.EL, kernel-source 2.4.21-57.EL, kernel-hugemem 2.4.21-57.EL, kernel-unsupported 2.4.21-57.EL, +2 more
    fixed: vendor fix RHSA-2008:0211
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-67.0.15.EL, kernel-smp 2.6.9-67.0.15.EL, kernel-xenU 2.6.9-67.0.15.EL, kernel-hugemem 2.6.9-67.0.15.EL, kernel-largesmp 2.6.9-67.0.15.EL
    fixed: vendor fix RHSA-2008:0237
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-53.1.19.el5, kernel-PAE 2.6.18-53.1.19.el5, kernel-xen 2.6.18-53.1.19.el5, kernel-kdump 2.6.18-53.1.19.el5, kernel-debuginfo-common 2.6.18-53.1.19.el5
    fixed: vendor fix RHSA-2008:0233
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-67.0.15.EL, kernel-smp 2.6.9-67.0.15.EL, kernel-xenU 2.6.9-67.0.15.EL, kernel-hugemem 2.6.9-67.0.15.EL, kernel-largesmp 2.6.9-67.0.15.EL
    fixed: vendor fix RHSA-2008:0237
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-57.EL, kernel-smp 2.4.21-57.EL, kernel-BOOT 2.4.21-57.EL, kernel-source 2.4.21-57.EL, kernel-hugemem 2.4.21-57.EL, kernel-unsupported 2.4.21-57.EL, +2 more
    fixed: vendor fix RHSA-2008:0211
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-67.0.15.EL, kernel-smp 2.6.9-67.0.15.EL, kernel-xenU 2.6.9-67.0.15.EL, kernel-hugemem 2.6.9-67.0.15.EL, kernel-largesmp 2.6.9-67.0.15.EL
    fixed: vendor fix RHSA-2008:0237
show 2 more
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-57.EL, kernel-smp 2.4.21-57.EL, kernel-BOOT 2.4.21-57.EL, kernel-source 2.4.21-57.EL, kernel-hugemem 2.4.21-57.EL, kernel-unsupported 2.4.21-57.EL, +2 more
    fixed: vendor fix RHSA-2008:0211
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-67.0.15.EL, kernel-smp 2.6.9-67.0.15.EL, kernel-xenU 2.6.9-67.0.15.EL, kernel-hugemem 2.6.9-67.0.15.EL, kernel-largesmp 2.6.9-67.0.15.EL
    fixed: vendor fix RHSA-2008:0237

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, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 6.9 AV:L/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
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.