OpenBSD Errata: March 21, 2026 (expat sack)

Errata patches for expat library and TCP selective ACK in kernel
have been released for OpenBSD 7.7 and 7.8.

Binary updates for the amd64, arm64 and i386 platform are available
via the syspatch utility.  Source code patches can be found on the
respective errata page:

  https://www.openbsd.org/errata77.html
  https://www.openbsd.org/errata78.html