CVE-2002-2438

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag...

7.5 High

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

3.74%Up 1.1 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

Record: CVE-2002-2438
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-287
Updated: 2026-11-02

CVE List No score

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

Record: CVE-2002-2438
Weakness: CWE-287
Updated: 2026-11-02

EUVDEUVD-2002-2416 No score

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

Record: EUVD-2002-2416
Updated: 2026-11-03

GitHub AdvisoriesGHSA-w6mc-fc3q-jpx7 7.5

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag...

TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.

Record: GHSA-w6mc-fc3q-jpx7
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-287
Updated: 2026-11-02

Affected products

linux kernel

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2002-2438 is a high vulnerability (CVSS 7.5) in Linux Kernel, published May 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.74%, the 89th percentile. No source names a fixed version.

References

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