Description
The sctp_new function in (1) ip_conntrack_proto_sctp.c and (2) nf_conntrack_proto_sctp.c in Netfilter in Linux kernel 2.6 before 2.6.20.13, and 2.6.21.x before 2.6.21.4, allows remote attackers to cause a denial of service by causing certain invalid states that trigger a NULL pointer dereference.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 4.0 | linux-2.6 | 2.6.18.dfsg.1-13etch1 | DSA-1356-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | kernel +10 | 2.6.18-8.1.10.el5 | RHSA-2007:0705 |
| RHEL 4 | kernel +10 | 2.6.9-55.0.2.EL | RHSA-2007:0488 |
Advisories 3
- RHSA-2007:0705 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2007:0488 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-1356-1 linux-2.6 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 24376 vdb-entry
- 27227 third-party-advisory
- 26664 third-party-advisory
- SUSE-SA:2007:051 vendor-advisory
- ADV-2007-2105 vdb-entry
- SUSE-SA:2007:053 vendor-advisory
- SUSE-SA:2007:043 vendor-advisory
- 26289 third-party-advisory
- 25838 third-party-advisory
- MDKSA-2007:171 vendor-advisory
- USN-510-1 vendor-advisory
- DSA-1356 vendor-advisory
- 26760 third-party-advisory
- RHSA-2007:0705 vendor-advisory
- 26620 third-party-advisory
- USN-489-1 vendor-advisory
- MDKSA-2007:196 vendor-advisory
- kernel-sctpnew-dos(34777) vdb-entry
- [linux-kernel] 20070608 Linux 2.6.21.4 mailing-list
- 25961 third-party-advisory
- oval:org.mitre.oval:def:10116 vdb-entry signature
- http://support.avaya.com/elmodocs2/security/ASA-2007-287.htm
- USN-486-1 vendor-advisory
- 26450 third-party-advisory
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.4
- 37112 vdb-entry
- [linux-kernel] 20070608 Linux 2.6.20.13 mailing-list
- 26139 third-party-advisory
- RHSA-2007:0488 vendor-advisory
- 26133 third-party-advisory