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Fencer Vulns
high 7.2

CVE-2007-6151 json

The isdn_ioctl function in isdn_common.c in Linux kernel 2.6.23 allows local users to cause a denial of service via a crafted ioctl struct…

published 2007-12-15 18 y ago modified 2026-06-16 4 mo ago also EUVD-2007-6120

cvss
7.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

The isdn_ioctl function in isdn_common.c in Linux kernel 2.6.23 allows local users to cause a denial of service via a crafted ioctl struct in which iocts is not null terminated, which triggers a buffer overflow.

Patch / fix

  • 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-2008:0211RHSA-2008:0055

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-2007-6151 updated

I4L: fix isdn_ioctl memory issue

  • 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 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 2.4.21-57.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 2.6.9-67.0.4.EL, kernel-smp 2.6.9-67.0.4.EL, kernel-xenU 2.6.9-67.0.4.EL, kernel-hugemem 2.6.9-67.0.4.EL, kernel-largesmp 2.6.9-67.0.4.EL Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-67.0.4.EL, kernel-smp 2.6.9-67.0.4.EL, kernel-xenU 2.6.9-67.0.4.EL, kernel-hugemem 2.6.9-67.0.4.EL, kernel-largesmp 2.6.9-67.0.4.EL
    fixed: vendor fix RHSA-2008:0055
  • 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
  • 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 2.6.9-67.0.4.EL, kernel-smp 2.6.9-67.0.4.EL, kernel-xenU 2.6.9-67.0.4.EL, kernel-hugemem 2.6.9-67.0.4.EL, kernel-largesmp 2.6.9-67.0.4.EL
    fixed: vendor fix RHSA-2008:0055
  • 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
show 3 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 2.6.9-67.0.4.EL, kernel-smp 2.6.9-67.0.4.EL, kernel-xenU 2.6.9-67.0.4.EL, kernel-hugemem 2.6.9-67.0.4.EL, kernel-largesmp 2.6.9-67.0.4.EL
    fixed: vendor fix RHSA-2008:0055
  • 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

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
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.