OpenBSD Errata: July 25th, 2019 (tcpsack)
24 July, 2019 by email@example.com | openbsd
Errata patches for the kernel have been released for OpenBSD 6.4 and 6.5. By creating long chains of TCP SACK holes, an attacker could possibly slow down the system temporarily. 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.