What’s Vulnerable › Vulnerabilities

CVE-2008-2136

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2008-05-16 · updated 2026-06-16
• Weakness: CWE-399

Description

Memory leak in the ipip6_rcv function in net/ipv6/sit.c in the Linux kernel 2.4 before 2.4.36.5 and 2.6 before 2.6.25.3 allows remote attackers to cause a denial of service (memory consumption) via network traffic to a Simple Internet Transition (SIT) tunnel interface, related to the pskb_may_pull and kfree_skb functions, and management of an skb reference count.

Affected products

• Canonical Ubuntu Linux: 6.06, 7.04, 7.10, 8.04
• Debian Linux: 4.0
• Linux kernel: from 2.4.0 before 2.4.36.5; from 2.6.0 before 2.6.25.3 — fixed in 2.4.36.5, 2.6.25.3

How to fix

Upgrade to a fixed version: Linux kernel 2.4.36.5, 2.6.25.3. Check the vendor advisory for mitigations.

References

• http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.3
• http://lists.opensuse.org/opensuse-security-announce/2008-06/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00002.html
• http://marc.info/?l=linux-netdev&m=121031533024912&w=2
• http://secunia.com/advisories/30198
• http://secunia.com/advisories/30241
• http://secunia.com/advisories/30276
• http://secunia.com/advisories/30368
• http://secunia.com/advisories/30499
• http://secunia.com/advisories/30818
• http://secunia.com/advisories/30962
• http://secunia.com/advisories/31107

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