Description
The sctp_send_initiate_ack function in sys/netinet/sctp_output.c in the SCTP implementation in the kernel in FreeBSD 8.3 through 9.2-PRERELEASE does not properly initialize the state-cookie data structure, which allows remote attackers to obtain sensitive information from kernel stack memory by reading packet data in INIT-ACK chunks.
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 7 | kfreebsd-9 | 9.0-10+deb70.3 | DSA-2743-1 |
Advisories 1
- DSA-2743-1 kfreebsd-9 - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- FreeBSD-SA-13:10 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=905080
- 1028940 vdb-entry
- 61939 vdb-entry
- http://svnweb.freebsd.org/base?view=revision&revision=254338