The netfilter/iptables module in Linux before 2.6.8.1 allows remote attackers to cause a…
Priority LOW 39CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
The netfilter/iptables module in Linux before 2.6.8.1 allows remote attackers to cause a denial of service (kernel crash) or bypass firewall rules via crafted packets, which are not properly handled by the skb_checksum_help function.
Why it matters now
EPSS 0.04638 91st percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories
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 · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:* | 2.6.0 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:* | 2.6.1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:* | 2.6.2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:* | 2.6.3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.4:*:*:*:*:*:*:* | 2.6.4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.5:*:*:*:*:*:*:* | 2.6.5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.6:*:*:*:*:*:*:* | 2.6.6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:* | 2.6.7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:* | 2.6.8 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:* Versions 2.6.0 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:* Versions 2.6.1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:* Versions 2.6.2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:* Versions 2.6.3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.4:*:*:*:*:*:*:* Versions 2.6.4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.5:*:*:*:*:*:*:* Versions 2.6.5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.6:*:*:*:*:*:*:* Versions 2.6.6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:* Versions 2.6.7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:* Versions 2.6.8 Vulnerable ·Linux
Remediation
Red Hat 4 advisories
- RHSA-2005:284 Released 2005-04-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- Red Hat Linux Advanced Workstation 2.1
- RHSA-2005:283 Released 2005-04-28 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- Red Hat Enterprise Linux ES version 2.1
- Red Hat Enterprise Linux WS version 2.1
- RHSA-2005:293 Released 2005-04-22 · Red Hat rating Importantkernel security update
- Red Hat Desktop version 3 kernel-2.4.21-27.0.4.EL, kernel-2.4.21-27.0.4.EL.athlon, kernel-2.4.21-27.0.4.EL.ia32e +14
- Red Hat Enterprise Linux AS version 3 kernel-2.4.21-27.0.4.EL, kernel-2.4.21-27.0.4.EL.athlon, kernel-2.4.21-27.0.4.EL.ia32e +22
- Red Hat Enterprise Linux ES version 3 kernel-2.4.21-27.0.4.EL, kernel-2.4.21-27.0.4.EL.athlon, kernel-2.4.21-27.0.4.EL.ia32e +18
- Red Hat Enterprise Linux WS version 3 kernel-2.4.21-27.0.4.EL, kernel-2.4.21-27.0.4.EL.athlon, kernel-2.4.21-27.0.4.EL.ia32e +18
Show 1 more Red Hat advisories
- RHSA-2005:366 Released 2005-04-19 · Red Hat rating Importantkernel security update
- Red Hat Enterprise Linux AS version 4 kernel-2.6.9-5.0.5.EL, kernel-2.6.9-5.0.5.EL.ia64, kernel-2.6.9-5.0.5.EL.ppc64iseries +8
- Red Hat Enterprise Linux Desktop version 4 kernel-2.6.9-5.0.5.EL, kernel-devel-2.6.9-5.0.5.EL, kernel-doc-2.6.9-5.0.5.EL +4
- Red Hat Enterprise Linux ES version 4 kernel-2.6.9-5.0.5.EL, kernel-2.6.9-5.0.5.EL.ia64, kernel-devel-2.6.9-5.0.5.EL +6
- Red Hat Enterprise Linux WS version 4 kernel-2.6.9-5.0.5.EL, kernel-2.6.9-5.0.5.EL.ia64, kernel-devel-2.6.9-5.0.5.EL +6
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Desktop version 3 | Fixed | RHSA-2005:293 |
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2005:283 |
| Red Hat Enterprise Linux AS version 3 | Fixed | RHSA-2005:293 |
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2005:366 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2005:366 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2005:283 |
| Red Hat Enterprise Linux ES version 3 | Fixed | RHSA-2005:293 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2005:366 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2005:283 |
| Red Hat Enterprise Linux WS version 3 | Fixed | RHSA-2005:293 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2005:366 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2005:284 |
Timeline
- 2026-10-02 Threatist record created from CVE-2005-0449
- 2026-10-03 Alias added: GHSA-g9wm-8j5w-m9xc
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-2005-0449 · CVE Program
- CVE-2005-0449 · NVD
- FIRST EPSS
- GHSA-g9wm-8j5w-m9xc · GitHub Advisory Database · CC BY 4.0
- CVE-2005-0449 · Red Hat security data · CC BY 4.0
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