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TI-2001-00814 Aliases CVE-2001-0851GHSA-gfc3-m7qc-fc7m

Linux kernel 2.0, 2.2 and 2.4 with syncookies enabled allows remote attackers to bypass…

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
Partial · None · None
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

Linux kernel 2.0, 2.2 and 2.4 with syncookies enabled allows remote attackers to bypass firewall rules by brute force guessing the cookie.

Why it matters now

EPSS 0.03004 87th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 14

CPEVersionsRoleVendor
cpe:2.3:a:caldera:openlinux_server:3.1:*:*:*:*:*:*:*3.1VulnerableCaldera
cpe:2.3:a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:*3.1VulnerableCaldera
cpe:2.3:o:caldera:openlinux:2.3:*:*:*:*:*:*:*2.3VulnerableCaldera
cpe:2.3:o:caldera:openlinux_edesktop:2.4:*:*:*:*:*:*:*2.4VulnerableCaldera
cpe:2.3:o:caldera:openlinux_eserver:2.3.1:*:*:*:*:*:*:*2.3.1VulnerableCaldera
cpe:2.3:o:linux:linux_kernel:2.0:*:*:*:*:*:*:*2.0VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.2.0:*:*:*:*:*:*:*2.2.0VulnerableLinux
cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:*2.4.0VulnerableLinux
cpe:2.3:o:suse:suse_linux:6.3:*:*:*:*:*:*:*6.3VulnerableSUSE
cpe:2.3:o:suse:suse_linux:6.4:*:*:*:*:*:*:*6.4VulnerableSUSE
  • cpe:2.3:a:caldera:openlinux_server:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Caldera
  • cpe:2.3:a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Caldera
  • cpe:2.3:o:caldera:openlinux:2.3:*:*:*:*:*:*:* Versions 2.3 Vulnerable ·Caldera
  • cpe:2.3:o:caldera:openlinux_edesktop:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·Caldera
  • cpe:2.3:o:caldera:openlinux_eserver:2.3.1:*:*:*:*:*:*:* Versions 2.3.1 Vulnerable ·Caldera
  • cpe:2.3:o:linux:linux_kernel:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.2.0:*:*:*:*:*:*:* Versions 2.2.0 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:* Versions 2.4.0 Vulnerable ·Linux
  • cpe:2.3:o:suse:suse_linux:6.3:*:*:*:*:*:*:* Versions 6.3 Vulnerable ·SUSE
  • cpe:2.3:o:suse:suse_linux:6.4:*:*:*:*:*:*:* Versions 6.4 Vulnerable ·SUSE
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:suse:suse_linux:7.0:*:*:*:*:*:*:*7.0VulnerableSUSE
cpe:2.3:o:suse:suse_linux:7.1:*:*:*:*:*:*:*7.1VulnerableSUSE
cpe:2.3:o:suse:suse_linux:7.2:*:*:*:*:*:*:*7.2VulnerableSUSE
cpe:2.3:o:suse:suse_linux:7.3:*:*:*:*:*:*:*7.3VulnerableSUSE
  • cpe:2.3:o:suse:suse_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·SUSE
  • cpe:2.3:o:suse:suse_linux:7.1:*:*:*:*:*:*:* Versions 7.1 Vulnerable ·SUSE
  • cpe:2.3:o:suse:suse_linux:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·SUSE
  • cpe:2.3:o:suse:suse_linux:7.3:*:*:*:*:*:*:* Versions 7.3 Vulnerable ·SUSE

Remediation

Red Hat 1 advisory

  • RHSA-2001:142 Released 2001-11-02 · Red Hat rating Important
    kernel 2.2 and 2.4
    • Red Hat Linux 6.2
    • Red Hat Linux 7.0
    • Red Hat Linux 7.1
    • Red Hat Linux 7.2

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Linux 6.2Fixed RHSA-2001:142
Red Hat Linux 7.0Fixed RHSA-2001:142
Red Hat Linux 7.1Fixed RHSA-2001:142
Red Hat Linux 7.2Fixed RHSA-2001:142

Timeline

  1. 2026-10-02 Threatist record created from CVE-2001-0851
  2. 2026-10-03 Alias added: GHSA-gfc3-m7qc-fc7m

References

Patch 2

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences