CVE-2007-4567

CVE-2007-4567 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 7.8. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-20.

Key facts

Description

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.

Frequently asked questions

What is 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 header, which allows remote attackers to cause a denial of service (NULL pointer dereference and kernel panic) via a crafted IPv6 packet.
How severe is CVE-2007-4567?
CVE-2007-4567 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2007-4567 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-4567?
CVE-2007-4567 primarily affects Linux Linux Kernel. In total, 30 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2007-4567?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2007-4567 published?
CVE-2007-4567 was published on 2007-12-21 and last updated on 2026-06-16.

References

Affected products (30)

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