Errata patches for sti have been released for OpenBSD 6.1 and 6.0.
An integer overflow exists in two range checks.
Source code patches can be found on the respective errata pages:
https://www.openbsd.org/errata60.html
https://www.openbsd.org/errata61.html
As this affects the kernel, a reboot will be needed after patching.
The fix is only needed on the hppa architecture.
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