Description
net/sctp/sm_make_chunk.c in the Linux kernel before 2.6.34, when addip_enable and auth_enable are used, does not consider the amount of zero padding during calculation of chunk lengths for (1) INIT and (2) INIT ACK chunks, which allows remote attackers to cause a denial of service (OOPS) via crafted packet data.
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.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | perf +13 | 2.6.32-71.29.1.el6 | RHSA-2011:0498 |
| RHEL 5 | kernel +11 | 2.6.18-238.19.1.el5 | RHSA-2011:0927 |
Advisories 2
- RHSA-2011:0498 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2011:0927 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jan 14, 2026
References
- RHSA-2011:0927 vendor-advisory
- http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.34
- [oss-security] 20110411 Re: CVE request - kernel: sctp: fix to calc the INIT/INIT-ACK chunk length correctly to set mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=695383
- [oss-security] 20110411 CVE request - kernel: sctp: fix to calc the INIT/INIT-ACK chunk length correctly to set mailing-list
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a8170c35e738d62e9919ce5b109cf4ed66e95bde