The tcp_find_option function of the netfilter subsystem in Linux kernel 2.6, when using iptables and TCP options rules, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a large option length that produces a negative integer after a casting operation to the char type
Published Jul 6, 2004
5.0
MEDIUMCVSS 2.0
EPSS 2.76%
Description
The tcp_find_option function of the netfilter subsystem in Linux kernel 2.6, when using iptables and TCP options rules, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a large option length that produces a negative integer after a casting operation to the char type.
Affected products
No data.
Configuration 2
- n/a
- 2.6.0
- 8.0
- 8.1
- 8.2
- 9.0
- 9.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.76% (0.02761) | 85.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.76% (0.02761) | 84.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.74% (0.01738) | 81.24th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.30% (0.01296) | 86.42th | v3 (v2023.03.01) |
| Jun 21, 2024 | 1.30% (0.01296) | 85.91th | v3 (v2023.03.01) |
| Jun 13, 2023 | 1.30% (0.01296) | 83.91th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.81% (0.01815) | 86.28th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000852 vendor-advisoryx_refsource_CONECTIVAPatchVendor Advisory
- http://lwn.net/Articles/91964/ vendor-advisoryx_refsource_FEDORAPatchVendor Advisory
- http://marc.info/?l=bugtraq&m=108861141304495&w=2 mailing-listx_refsource_BUGTRAQ
- http://www.gentoo.org/security/en/glsa/glsa-200407-12.xml vendor-advisoryx_refsource_GENTOOPatchVendor Advisory
- http://www.novell.com/linux/security/advisories/2004_20_kernel.html vendor-advisoryx_refsource_SUSE
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16554 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000852 | vendor-advisoryx_refsource_CONECTIVAPatchVendor Advisory | |
| http://lwn.net/Articles/91964/ | vendor-advisoryx_refsource_FEDORAPatchVendor Advisory | |
| http://marc.info/?l=bugtraq&m=108861141304495&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://www.gentoo.org/security/en/glsa/glsa-200407-12.xml | vendor-advisoryx_refsource_GENTOOPatchVendor Advisory | |
| http://www.novell.com/linux/security/advisories/2004_20_kernel.html | vendor-advisoryx_refsource_SUSE | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/16554 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.