The tcp_find_option function of the netfilter subsystem in Linux kernel 2.6, when using…
Priority LOW 28Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.02761 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:conectiva:linux:10:*:*:*:*:*:*:* | 10 | Vulnerable | Conectiva |
| cpe:2.3:o:gentoo:linux:*:*:*:*:*:*:*:* | all versions | Vulnerable | gentoo |
| cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:* | 2.6.0 | Vulnerable | Linux |
| cpe:2.3:o:suse:suse_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | SUSE |
| cpe:2.3:o:suse:suse_linux:8.1:*:*:*:*:*:*:* | 8.1 | Vulnerable | SUSE |
| cpe:2.3:o:suse:suse_linux:8.2:*:*:*:*:*:*:* | 8.2 | Vulnerable | SUSE |
| cpe:2.3:o:suse:suse_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | SUSE |
| cpe:2.3:o:suse:suse_linux:9.1:*:*:*:*:*:*:* | 9.1 | Vulnerable | SUSE |
- cpe:2.3:o:conectiva:linux:10:*:*:*:*:*:*:* Versions 10 Vulnerable ·Conectiva
- cpe:2.3:o:gentoo:linux:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·gentoo
- cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·Linux
- cpe:2.3:o:suse:suse_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·SUSE
- cpe:2.3:o:suse:suse_linux:8.1:*:*:*:*:*:*:* Versions 8.1 Vulnerable ·SUSE
- cpe:2.3:o:suse:suse_linux:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·SUSE
- cpe:2.3:o:suse:suse_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·SUSE
- cpe:2.3:o:suse:suse_linux:9.1:*:*:*:*:*:*:* Versions 9.1 Vulnerable ·SUSE
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2004-0626
- 2026-10-03 Alias added: GHSA-hvfj-m7r2-j689
References
Sources
- CVE-2004-0626 · CVE Program
- CVE-2004-0626 · NVD
- FIRST EPSS
- GHSA-hvfj-m7r2-j689 · GitHub Advisory Database · CC BY 4.0
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