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NVD / CVE Program· CNA redhat

CVE-2007-4567: The ipv6_hop_jumbo function in net/ipv6/exthdrs.c in the Linux kernel before 2.6.22 does not properly validate the hop-by-hop IPv6 extended…

HighCVSS 7.8 · v2.0—Proof of concept Fix available

Noroxi assessment

Priority: Monitor (action score 35/100)

  • Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 14.3% (FIRST EPSS); higher than 96.6% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: kernel (Red Hat:enterprise_linux:5::client) 0:2.6.18-164.10.1.el5; kernel-debug (Red Hat:enterprise_linux:5::client) 0:2.6.18-164.10.1.el5; kernel-debug-debuginfo (Red Hat:enterprise_linux:5::client) 0:2.6.18-164.10.1.el5.

Low priority for now. Upgrade to kernel (Red Hat:enterprise_linux:5::client) 0:2.6.18-164.10.1.el5; kernel-debug (Red Hat:enterprise_linux:5::client) 0:2.6.18-164.10.1.el5; kernel-debug-debuginfo (Red Hat:enterprise_linux:5::client) 0:2.6.18-164.10.1.el5 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The ipv6_hop_jumbo function in net/ipv6/exthdrs.c in the Linux kernel before 2.6.22 does not properly validate the hop-by-hop IPv6 extended header, which allows remote attackers to cause a denial of service (NULL pointer dereference and kernel panic) via a crafted IPv6 packet.

Published
Dec 20, 2007
Updated
Jun 16, 2026
EPSS
14.3% · 96th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
4 / 30 · 14.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelup to 2.6.21.7 inclusive
  • linux linux kernel2.2.27
  • linux linux kernel2.4.36
  • linux linux kernel2.4.36.1
  • linux linux kernel2.4.36.2
  • linux linux kernel2.4.36.3
  • linux linux kernel2.4.36.4
  • linux linux kernel2.4.36.5
+12 more rows
  • linux linux kernel2.4.36.6
  • linux linux kernel2.6
  • linux linux kernel2.6.18
  • linux linux kernel2.6.19.4
  • linux linux kernel2.6.19.5
  • linux linux kernel2.6.19.6
  • linux linux kernel2.6.19.7
  • linux linux kernel2.6.20.16
  • linux linux kernel2.6.20.17
  • linux linux kernel2.6.20.18
  • linux linux kernel2.6.20.19
  • linux linux kernel2.6.20.20

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:5::clientkernelbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-debugbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-debug-debuginfobefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-debug-develbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-debuginfobefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-debuginfo-commonbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-develbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-docbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-PAEbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-PAE-debuginfobefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-PAE-develbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-xenbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-xen-debuginfobefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::clientkernel-xen-develbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::hypervisorrhev-hypervisorbefore 0:5.4-2.1.8.el5_4rhev2_10:5.4-2.1.8.el5_4rhev2_1
Red Hat:enterprise_linux:5::hypervisorrhev-hypervisor-pxebefore 0:5.4-2.1.8.el5_4rhev2_10:5.4-2.1.8.el5_4rhev2_1
Red Hat:enterprise_linux:5::serverkernel-kdumpbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::serverkernel-kdump-debuginfobefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:enterprise_linux:5::serverkernel-kdump-develbefore 0:2.6.18-164.10.1.el50:2.6.18-164.10.1.el5
Red Hat:rhel_eus:5.2kernelbefore 0:2.6.18-92.1.35.el50:2.6.18-92.1.35.el5
Red Hat:rhel_eus:5.2kernel-debugbefore 0:2.6.18-92.1.35.el50:2.6.18-92.1.35.el5
Red Hat:rhel_eus:5.2kernel-debug-debuginfobefore 0:2.6.18-92.1.35.el50:2.6.18-92.1.35.el5
Red Hat:rhel_eus:5.2kernel-debug-develbefore 0:2.6.18-92.1.35.el50:2.6.18-92.1.35.el5
Red Hat:rhel_eus:5.2kernel-debuginfobefore 0:2.6.18-92.1.35.el50:2.6.18-92.1.35.el5

+29

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2007-5966Dec 19, 2007 · Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute…
    28Monitor
  • ← EarlierCVE-2007-6246Dec 19, 2007 · Adobe Flash Player 9.x up to 9.0.48.0, 8.x up to 8.0.35.0, and 7.x up to 7.0.70.0, when running on Linux, uses insecure permissions for…
    21Monitor
  • Later →CVE-2007-6514Dec 21, 2007 · Apache HTTP Server, when running on Linux with a document root on a Windows share mounted using smbfs, allows remote attackers to obtain…
    28Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:kernel0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-debug0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-debug-debuginfo0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-debug-devel0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-debuginfo0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-debuginfo-common0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-devel0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-doc0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-PAE0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-PAE-debuginfo0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-PAE-devel0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:kernel-xen0:2.6.18-164.10.1.el5 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrydos2007-12-19

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-2 d
  2. Published
  3. TodayNov 15, 2026+6905 d

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
C · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
C

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (15 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records