The nfattr_to_tcp function in ip_conntrack_proto_tcp.c in ctnetlink in Linux kernel…
Priority LOW 38Published · 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 · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The nfattr_to_tcp function in ip_conntrack_proto_tcp.c in ctnetlink in Linux kernel 2.6.14 up to 2.6.14.3 allows attackers to cause a denial of service (kernel oops) via an update message without private protocol information, which triggers a null dereference.
Why it matters now
EPSS 0.0205 81st 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:linux:linux_kernel:2.6.14:*:*:*:*:*:*:* | 2.6.14 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14:rc1:*:*:*:*:*:* | 2.6.14 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14:rc2:*:*:*:*:*:* | 2.6.14 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14:rc3:*:*:*:*:*:* | 2.6.14 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14:rc4:*:*:*:*:*:* | 2.6.14 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14.1:*:*:*:*:*:*:* | 2.6.14.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14.2:*:*:*:*:*:*:* | 2.6.14.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.14.3:*:*:*:*:*:*:* | 2.6.14.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:2.6.14:*:*:*:*:*:*:* Versions 2.6.14 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14:rc1:*:*:*:*:*:* Versions 2.6.14 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14:rc2:*:*:*:*:*:* Versions 2.6.14 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14:rc3:*:*:*:*:*:* Versions 2.6.14 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14:rc4:*:*:*:*:*:* Versions 2.6.14 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14.1:*:*:*:*:*:*:* Versions 2.6.14.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14.2:*:*:*:*:*:*:* Versions 2.6.14.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.14.3:*:*:*:*:*:*:* Versions 2.6.14.3 Vulnerable ·Linux
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-3809
- 2026-10-03 Alias added: GHSA-f47f-7prx-x9jv
References
More Linux Kernel vulnerabilities
- TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
- TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
- TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
Sources
- CVE-2005-3809 · CVE Program
- CVE-2005-3809 · NVD
- FIRST EPSS
- GHSA-f47f-7prx-x9jv · GitHub Advisory Database · CC BY 4.0
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