Skip to content
Fencer Vulns
medium 4.7

CVE-2007-2172 json

A typo in Linux kernel 2.6 before 2.6.21-rc6 and 2.4 before 2.4.35 causes RTA_MAX to be used as an array size instead of RTN_MAX, which lea…

published 2007-04-22 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-2167

cvss
4.7
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 37%
public exploits
0
none known

Summary

A typo in Linux kernel 2.6 before 2.6.21-rc6 and 2.4 before 2.4.35 causes RTA_MAX to be used as an array size instead of RTN_MAX, which leads to an "out of bound access" by the (1) dn_fib_props (dn_fib.c, DECNet) and (2) fib_props (fib_semantics.c, IPv4) functions.

Patch / fix

  • linux linux_kernel 2.4.35
  • kernel RHEL 2.1 2.4.9-e.74
  • kernel-smp RHEL 2.1 2.4.9-e.74
  • kernel-BOOT RHEL 2.1 2.4.9-e.74
  • kernel-source RHEL 2.1 2.4.9-e.74
  • kernel-summit RHEL 2.1 2.4.9-e.74
  • kernel-enterprise RHEL 2.1 2.4.9-e.74
  • kernel RHEL 2.1 2.4.18-e.67
  • kernel-smp RHEL 2.1 2.4.18-e.67

red hat advisories RHSA-2009:0001RHSA-2008:0787RHSA-2007:1049RHSA-2007:0488RHSA-2007:0347

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-2007-2172 updated

fib_semantics.c out of bounds access vulnerability

  • Red Hat Desktop version 3 kernel 2.4.21-53.EL, kernel-smp 2.4.21-53.EL, kernel-BOOT 2.4.21-53.EL, kernel-source 2.4.21-53.EL, kernel-hugemem 2.4.21-53.EL, kernel-unsupported 2.4.21-53.EL, +2 more
    fixed: vendor fix RHSA-2007:1049
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-8.1.4.el5, kernel-PAE 2.6.18-8.1.4.el5, kernel-xen 2.6.18-8.1.4.el5, kernel-kdump 2.6.18-8.1.4.el5, kernel-debuginfo-common 2.6.18-8.1.4.el5
    fixed: vendor fix RHSA-2007:0347
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 kernel 2.4.9-e.74, kernel 2.4.18-e.67, kernel-smp 2.4.9-e.74, kernel-BOOT 2.4.9-e.74, kernel-smp 2.4.18-e.67, kernel-source 2.4.9-e.74, +3 more
    fixed: vendor fix RHSA-2008:0787
  • Red Hat Enterprise Linux AS version 3 kernel 2.4.21-53.EL, kernel-smp 2.4.21-53.EL, kernel-BOOT 2.4.21-53.EL, kernel-source 2.4.21-53.EL, kernel-hugemem 2.4.21-53.EL, kernel-unsupported 2.4.21-53.EL, +2 more
    fixed: vendor fix RHSA-2007:1049
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL
    fixed: vendor fix RHSA-2007:0488
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-8.1.4.el5, kernel-PAE 2.6.18-8.1.4.el5, kernel-xen 2.6.18-8.1.4.el5, kernel-kdump 2.6.18-8.1.4.el5, kernel-debuginfo-common 2.6.18-8.1.4.el5
    fixed: vendor fix RHSA-2007:0347
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL
    fixed: vendor fix RHSA-2007:0488
  • Red Hat Enterprise Linux ES version 2.1 kernel 2.4.9-e.74, kernel-smp 2.4.9-e.74, kernel-BOOT 2.4.9-e.74, kernel-source 2.4.9-e.74, kernel-summit 2.4.9-e.74, kernel-enterprise 2.4.9-e.74
    fixed: vendor fix RHSA-2009:0001
show 6 more
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-53.EL, kernel-smp 2.4.21-53.EL, kernel-BOOT 2.4.21-53.EL, kernel-source 2.4.21-53.EL, kernel-hugemem 2.4.21-53.EL, kernel-unsupported 2.4.21-53.EL, +2 more
    fixed: vendor fix RHSA-2007:1049
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL
    fixed: vendor fix RHSA-2007:0488
  • Red Hat Enterprise Linux WS version 2.1 kernel 2.4.9-e.74, kernel-smp 2.4.9-e.74, kernel-BOOT 2.4.9-e.74, kernel-source 2.4.9-e.74, kernel-summit 2.4.9-e.74, kernel-enterprise 2.4.9-e.74
    fixed: vendor fix RHSA-2009:0001
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-53.EL, kernel-smp 2.4.21-53.EL, kernel-BOOT 2.4.21-53.EL, kernel-source 2.4.21-53.EL, kernel-hugemem 2.4.21-53.EL, kernel-unsupported 2.4.21-53.EL, +2 more
    fixed: vendor fix RHSA-2007:1049
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL
    fixed: vendor fix RHSA-2007:0488
  • Red Hat Linux Advanced Workstation 2.1 kernel 2.4.18-e.67, kernel-smp 2.4.18-e.67, kernel-source 2.4.18-e.67
    fixed: vendor fix RHSA-2008:0787

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

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.7 AV:L/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-20 Improper Input Validation
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.