OpenBSD Errata: September 2nd, 2019 (frag6ecn)
1 September, 2019 by firstname.lastname@example.org | openbsd
Errata patches for the kernel have been released for OpenBSD 6.4 and 6.5. When processing ECN bits on incoming IPv6 fragments, the kernel could crash. Per default pf fragment reassemble prevents the crash. Binary updates for the amd64, i386, and arm64 platforms are available via the syspatch utility. Source code patches can be found on the respective errata page: https://www.openbsd.org/errata64.html https://www.openbsd.org/errata65.html As these affect the kernel, a reboot will be needed after patching.