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Fencer Vulns
low 1.9

CVE-2007-0006 json

The key serial number collision avoidance code in the key_alloc_serial function in Linux kernel 2.6.9 up to 2.6.20 allows local users to ca…

published 2007-02-06 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-0010

cvss
1.9
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 32%
public exploits
0
none known

Summary

The key serial number collision avoidance code in the key_alloc_serial function in Linux kernel 2.6.9 up to 2.6.20 allows local users to cause a denial of service (crash) via vectors that trigger a null dereference, as originally reported as "spinlock CPU recursion."

Patch / fix

  • kernel RHEL 5 2.6.18-8.1.1.el5
  • kernel-PAE RHEL 5 2.6.18-8.1.1.el5
  • kernel-xen RHEL 5 2.6.18-8.1.1.el5
  • kernel-kdump RHEL 5 2.6.18-8.1.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-8.1.1.el5
  • kernel RHEL 4 2.6.9-42.0.10.EL
  • kernel-smp RHEL 4 2.6.9-42.0.10.EL
  • kernel-hugemem RHEL 4 2.6.9-42.0.10.EL

red hat advisories RHSA-2007:0099RHSA-2007:0085

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-2007-0006 updated

security flaw

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-8.1.1.el5, kernel-PAE 2.6.18-8.1.1.el5, kernel-xen 2.6.18-8.1.1.el5, kernel-kdump 2.6.18-8.1.1.el5, kernel-debuginfo-common 2.6.18-8.1.1.el5
    fixed: vendor fix RHSA-2007:0099
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-42.0.10.EL, kernel-smp 2.6.9-42.0.10.EL, kernel-hugemem 2.6.9-42.0.10.EL, kernel-largesmp 2.6.9-42.0.10.EL
    fixed: vendor fix RHSA-2007:0085
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-8.1.1.el5, kernel-PAE 2.6.18-8.1.1.el5, kernel-xen 2.6.18-8.1.1.el5, kernel-kdump 2.6.18-8.1.1.el5, kernel-debuginfo-common 2.6.18-8.1.1.el5
    fixed: vendor fix RHSA-2007:0099
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-42.0.10.EL, kernel-smp 2.6.9-42.0.10.EL, kernel-hugemem 2.6.9-42.0.10.EL, kernel-largesmp 2.6.9-42.0.10.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-42.0.10.EL, kernel-smp 2.6.9-42.0.10.EL, kernel-hugemem 2.6.9-42.0.10.EL, kernel-largesmp 2.6.9-42.0.10.EL Red Hat Enterprise Linux WS version 4 kernel 2.6.9-42.0.10.EL, kernel-smp 2.6.9-42.0.10.EL, kernel-hugemem 2.6.9-42.0.10.EL, kernel-largesmp 2.6.9-42.0.10.EL
    fixed: vendor fix RHSA-2007:0085

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 1.9 AV:L/AC:M/Au:N/C:N/I:N/A:P

Classification

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.