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Vulnerability record · CVE-2007-4567 · published 21 December 2007

CVE-2007-4567: Linux kernel improper input validation vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 2.0 High EPSS 14% · top 3.5% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
32References
16 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugzilla.kernel.org/show_bug.cgi?id=8450
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e76b2b2567b83448c2ee85a896433b96150c92e6
http://secunia.com/advisories/25505 Vendor Advisory
http://secunia.com/advisories/28170 Vendor Advisory
http://secunia.com/advisories/28706 Vendor Advisory
http://secunia.com/advisories/38015 Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2010-0019.html
http://www.redhat.com/support/errata/RHSA-2010-0053.html
http://www.securityfocus.com/bid/26943
http://www.ubuntu.com/usn/usn-574-1
https://bugzilla.redhat.com/show_bug.cgi?id=548641
https://exchange.xforce.ibmcloud.com/vulnerabilities/39171
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11083
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7474
https://rhn.redhat.com/errata/RHSA-2010-0095.html
https://usn.ubuntu.com/558-1/
http://bugzilla.kernel.org/show_bug.cgi?id=8450
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e76b2b2567b83448c2ee85a896433b96150c92e6
http://secunia.com/advisories/25505 Vendor Advisory
http://secunia.com/advisories/28170 Vendor Advisory
http://secunia.com/advisories/28706 Vendor Advisory
http://secunia.com/advisories/38015 Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2010-0019.html
http://www.redhat.com/support/errata/RHSA-2010-0053.html
http://www.securityfocus.com/bid/26943
http://www.ubuntu.com/usn/usn-574-1
https://bugzilla.redhat.com/show_bug.cgi?id=548641
https://exchange.xforce.ibmcloud.com/vulnerabilities/39171
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11083
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7474
https://rhn.redhat.com/errata/RHSA-2010-0095.html
https://usn.ubuntu.com/558-1/

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Source: NIST National Vulnerability Database (record CVE-2007-4567), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.