Linux SCTP fragmented control chunk denial of service

linux-sctp-control-chunk-dos (26431) The risk level is classified as MediumMedium Risk


Linux kernel SCTP (lksctp) could allow a remote attacker to cause a denial of service, caused by improper handling of fragmented COOKIE_ECHO and HEARTBEAT SCTP control chunks. A remote attacker could exploit this vulnerability to cause a kernel panic.


Base Score: 5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed


Denial of Service


Upgrade to the latest stable version of the Linux kernel ( or later), available from The Linux Kernel Archives. See References.

For Red Hat Linux:
Refer to RHSA-2006:0493-6 for patch, upgrade, or suggested workaround information. See References.

For Debian GNU/Linux:
Refer to DSA-1097-1 and DSA-1103-1 for patch, upgrade, or suggested workaround information. See References.

For SUSE Linux:
Refer to SUSE-SA:2006:028 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Apply the appropriate update for your system. See References.


Platforms Affected:

  • Canonical Ubuntu 5.04
  • Canonical Ubuntu 5.10
  • Canonical Ubuntu 6.06 LTS
  • Debian Debian Linux 3.1
  • lksctp lksctp 2.6.0_Test1_0.7.2
  • lksctp lksctp 2.6.0_Test4_0.7.3
  • lksctp lksctp 2.6.10_1.0.2
  • lksctp lksctp 2.6.13_1.0.3
  • lksctp lksctp 2.6.14_1.0.4
  • lksctp lksctp 2.6.15_1.0.5
  • lksctp lksctp 2.6.16_1.0.6
  • lksctp lksctp 2.6.2_0.9.0
  • lksctp lksctp 2.6.3_1.0.0
  • lksctp lksctp 2.6.6_1.0.1
  • MandrakeSoft Mandrake Linux 2006
  • MandrakeSoft Mandrake Linux 2006 X86_64
  • Novell UnitedLinux 1.0
  • RedHat Enterprise Linux 4 AS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 WS
  • SuSE Linux Enterprise Server 8
  • SuSE Linux Enterprise Server 9
  • SUSE SuSE Linux 10.0
  • SUSE SuSE Linux 9.1
  • SUSE SuSE Linux 9.2
  • SUSE SuSE Linux 9.3
  • SuSE SuSE SLES 9


May 08, 2006

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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