CVE-2007-4567

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 14.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2007-12-21 · updated 2026-06-16
Weakness: CWE-20

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.

Affected products

Linux kernel: through 2.6.21.7; 2.2.27, 2.4.36, 2.4.36.1, 2.4.36.2, 2.4.36.3, 2.4.36.4 (+23)

References

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
http://secunia.com/advisories/28170
http://secunia.com/advisories/28706
http://secunia.com/advisories/38015
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

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