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Fencer Vulns
medium 4.9

CVE-2007-1592 json

net/ipv6/tcp_ipv6.c in Linux kernel 2.6.x up to 2.6.21-rc3 inadvertently copies the ipv6_fl_socklist from a listening TCP socket to child s…

published 2007-03-22 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-1586

cvss
4.9
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 36%
public exploits
0
none known

Summary

net/ipv6/tcp_ipv6.c in Linux kernel 2.6.x up to 2.6.21-rc3 inadvertently copies the ipv6_fl_socklist from a listening TCP socket to child sockets, which allows local users to cause a denial of service (OOPS) or double free by opening a listening IPv6 socket, attaching a flow label, and connecting to that socket.

Patch / fix

  • kernel RHEL 2.1 2.4.18-e.65
  • kernel-smp RHEL 2.1 2.4.18-e.65
  • kernel-source RHEL 2.1 2.4.18-e.65
  • kernel RHEL 2.1 2.4.9-e.72
  • kernel-smp RHEL 2.1 2.4.9-e.72
  • kernel-BOOT RHEL 2.1 2.4.9-e.72
  • kernel-source RHEL 2.1 2.4.9-e.72
  • kernel-summit RHEL 2.1 2.4.9-e.72

red hat advisories RHSA-2007:0673RHSA-2007:0672RHSA-2007:0347RHBA-2007:0304RHSA-2007:0436

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-2007-1592 updated

IPv6 oops triggerable by any user

  • Red Hat Desktop version 3 kernel 2.4.21-50.EL, kernel-smp 2.4.21-50.EL, kernel-BOOT 2.4.21-50.EL, kernel-source 2.4.21-50.EL, kernel-hugemem 2.4.21-50.EL, kernel-unsupported 2.4.21-50.EL, +2 more
    fixed: vendor fix RHSA-2007:0436
  • 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.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 2.4.21-50.EL, kernel-smp 2.4.21-50.EL, kernel-BOOT 2.4.21-50.EL, kernel-source 2.4.21-50.EL, kernel-hugemem 2.4.21-50.EL, kernel-unsupported 2.4.21-50.EL, +2 more
    fixed: vendor fix RHSA-2007:0436
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-55.EL, kernel-smp 2.6.9-55.EL, kernel-xenU 2.6.9-55.EL, kernel-hugemem 2.6.9-55.EL, kernel-largesmp 2.6.9-55.EL
    fixed: vendor fix RHBA-2007:0304
  • 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.EL, kernel-smp 2.6.9-55.EL, kernel-xenU 2.6.9-55.EL, kernel-hugemem 2.6.9-55.EL, kernel-largesmp 2.6.9-55.EL
    fixed: vendor fix RHBA-2007:0304
  • 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 2.4.21-50.EL, kernel-smp 2.4.21-50.EL, kernel-BOOT 2.4.21-50.EL, kernel-source 2.4.21-50.EL, kernel-hugemem 2.4.21-50.EL, kernel-unsupported 2.4.21-50.EL, +2 more
    fixed: vendor fix RHSA-2007:0436
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-55.EL, kernel-smp 2.6.9-55.EL, kernel-xenU 2.6.9-55.EL, kernel-hugemem 2.6.9-55.EL, kernel-largesmp 2.6.9-55.EL
    fixed: vendor fix RHBA-2007:0304
  • 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 2.4.21-50.EL, kernel-smp 2.4.21-50.EL, kernel-BOOT 2.4.21-50.EL, kernel-source 2.4.21-50.EL, kernel-hugemem 2.4.21-50.EL, kernel-unsupported 2.4.21-50.EL, +2 more
    fixed: vendor fix RHSA-2007:0436
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-55.EL, kernel-smp 2.6.9-55.EL, kernel-xenU 2.6.9-55.EL, kernel-hugemem 2.6.9-55.EL, kernel-largesmp 2.6.9-55.EL
    fixed: vendor fix RHBA-2007:0304
  • 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

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/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.