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Fencer Vulns
medium 6.9

CVE-2007-1217 json

Buffer overflow in the bufprint function in capiutil.c in libcapi, as used in Linux kernel 2.6.9 to 2.6.20 and isdn4k-utils, allows local u…

published 2007-03-02 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1214

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 32%
public exploits
0
none known

Summary

Buffer overflow in the bufprint function in capiutil.c in libcapi, as used in Linux kernel 2.6.9 to 2.6.20 and isdn4k-utils, allows local users to cause a denial of service (crash) and possibly gain privileges via a crafted CAPI packet.

Patch / fix

  • kernel RHEL 4 2.6.9-55.0.6.EL
  • kernel-smp RHEL 4 2.6.9-55.0.6.EL
  • kernel-xenU RHEL 4 2.6.9-55.0.6.EL
  • kernel-hugemem RHEL 4 2.6.9-55.0.6.EL
  • kernel-largesmp RHEL 4 2.6.9-55.0.6.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-2007:0774RHSA-2007:0705RHSA-2007:0673RHSA-2007:0672RHSA-2007:0671

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-2007-1217 updated

Kernel: CAPI overflow

  • Red Hat Desktop version 3 kernel 2.4.21-51.EL, kernel-smp 2.4.21-51.EL, kernel-BOOT 2.4.21-51.EL, kernel-source 2.4.21-51.EL, kernel-hugemem 2.4.21-51.EL, kernel-unsupported 2.4.21-51.EL, +2 more
    fixed: vendor fix RHSA-2007:0671
  • 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 (Advanced Server) version 2.1 kernel 2.4.9-e.72, kernel 2.4.18-e.65, kernel-smp 2.4.9-e.72, kernel-BOOT 2.4.9-e.72, kernel-smp 2.4.18-e.65, kernel-source 2.4.9-e.72, +3 more
    fixed: vendor fix RHSA-2007:0673
  • Red Hat Enterprise Linux AS version 3 kernel 2.4.21-51.EL, kernel-smp 2.4.21-51.EL, kernel-BOOT 2.4.21-51.EL, kernel-source 2.4.21-51.EL, kernel-hugemem 2.4.21-51.EL, kernel-unsupported 2.4.21-51.EL, +2 more
    fixed: vendor fix RHSA-2007:0671
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-55.0.6.EL, kernel-smp 2.6.9-55.0.6.EL, kernel-xenU 2.6.9-55.0.6.EL, kernel-hugemem 2.6.9-55.0.6.EL, kernel-largesmp 2.6.9-55.0.6.EL
    fixed: vendor fix RHSA-2007:0774
  • 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 2.6.9-55.0.6.EL, kernel-smp 2.6.9-55.0.6.EL, kernel-xenU 2.6.9-55.0.6.EL, kernel-hugemem 2.6.9-55.0.6.EL, kernel-largesmp 2.6.9-55.0.6.EL
    fixed: vendor fix RHSA-2007:0774
  • Red Hat Enterprise Linux ES version 2.1 kernel 2.4.9-e.72, kernel-smp 2.4.9-e.72, kernel-BOOT 2.4.9-e.72, kernel-source 2.4.9-e.72, kernel-summit 2.4.9-e.72, kernel-enterprise 2.4.9-e.72
    fixed: vendor fix RHSA-2007:0672
show 6 more
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-51.EL, kernel-smp 2.4.21-51.EL, kernel-BOOT 2.4.21-51.EL, kernel-source 2.4.21-51.EL, kernel-hugemem 2.4.21-51.EL, kernel-unsupported 2.4.21-51.EL, +2 more
    fixed: vendor fix RHSA-2007:0671
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-55.0.6.EL, kernel-smp 2.6.9-55.0.6.EL, kernel-xenU 2.6.9-55.0.6.EL, kernel-hugemem 2.6.9-55.0.6.EL, kernel-largesmp 2.6.9-55.0.6.EL
    fixed: vendor fix RHSA-2007:0774
  • Red Hat Enterprise Linux WS version 2.1 kernel 2.4.9-e.72, kernel-smp 2.4.9-e.72, kernel-BOOT 2.4.9-e.72, kernel-source 2.4.9-e.72, kernel-summit 2.4.9-e.72, kernel-enterprise 2.4.9-e.72
    fixed: vendor fix RHSA-2007:0672
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-51.EL, kernel-smp 2.4.21-51.EL, kernel-BOOT 2.4.21-51.EL, kernel-source 2.4.21-51.EL, kernel-hugemem 2.4.21-51.EL, kernel-unsupported 2.4.21-51.EL, +2 more
    fixed: vendor fix RHSA-2007:0671
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-55.0.6.EL, kernel-smp 2.6.9-55.0.6.EL, kernel-xenU 2.6.9-55.0.6.EL, kernel-hugemem 2.6.9-55.0.6.EL, kernel-largesmp 2.6.9-55.0.6.EL
    fixed: vendor fix RHSA-2007:0774
  • Red Hat Linux Advanced Workstation 2.1 kernel 2.4.18-e.65, kernel-smp 2.4.18-e.65, kernel-source 2.4.18-e.65
    fixed: vendor fix RHSA-2007:0673

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 6.9 AV:L/AC:M/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.