Linux SCTP receive buffer deadlock denial of service

linux-sctp-receive-dos (26433) 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 a deadlock error in the receive buffer. A remote attacker could exploit this vulnerability by sending a large number of small messages to cause a denial of service.


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 4:
Refer to RHSA-2006:0575-22 for patch, upgrade, or suggested workaround information. See References.


  • The Linux Kernel Archives: [SCTP]: Allow spillover of receive buffer to avoid deadlock..
  • The The Linux Kernel Archives: The Linux Kernel Archives.
  • ASA-2006-200: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4 (RHSA-2006-0575)
  • BID-17955: Linux Kernel Multiple SCTP Remote Denial of Service Vulnerabilities
  • CVE-2006-2275: Linux SCTP (lksctp) before 2.6.17 allows remote attackers to cause a denial of service (deadlock) via a large number of small messages to a receiver application that cannot process the messages quickly enough, which leads to spillover of the receive buffer.
  • RHSA-2006-0575: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4
  • SA22417: Avaya Products Linux Kernel Multiple Vulnerabilities
  • USN-302-1: Linux kernel vulnerabilities

Platforms Affected:

  • Canonical Ubuntu 5.04
  • Canonical Ubuntu 5.10
  • Canonical Ubuntu 6.06 LTS
  • 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
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 AS


May 06, 2006

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