mobile VS src

Standard Notes (version 3.26.11): A simple and private notes app

Man, I've looked at Standard Notes and want to love it and switch everything over to it. This is the only thing holding me back: https://github.com/standardnotes/mobile/issues/45

Standard Notes — Mobile | GitHub

Try Notally, Joplin, Orgzly, Standard Notes, or Quillnote. You will have to decide what's best for you.

Available here: https://github.com/standardnotes/mobile/releases

Standard Notes (version 3.11.0): A simple and private notes app

A fork of (Standard Notes)[https://github.com/standardnotes/mobile] might be a start. It's an open source (aGPL) react-native/ts app with encryption interfaces and security audits. It also has a desktop version. Stripping out network components and beefing up the crypto could make it more secure and deniable. Adding templates could help users fill out MD reports.

It connect * Paseo (version 1.4.8): A free and open source step counting app. * CovPassCheck (version 1.17.0): Quickly check EU Digital COVID certificates with the app. * CovPass (version 1.17.0): Prove your vaccination, recovery, or negative test result. * Standard Notes (version 3.9.12): A simple and private notes app * Liedgutverzeichnis (version 2.15.0): An app that knows which song is to be found in which book at which page. * Simple Dialer - Manage your phone calls easily (version 5.11.4): A handy phone call manager with phonebook, number blocking and multi-SIM support * Briar (version 1.4.4): Secure Messaging, Anywhere * Volta (version 1.0.3): Additional actions on volume buttons

It seems I'm not the only one either https://github.com/standardnotes/mobile/issues/510

The OpenBSD project released 7.4 of their OS on 16 Oct 2023 as their 55th release 💫

Well since https://www.openbsd.org/ still says

> Only two remote holes in the default install, in a heck of a long time!

I'm assuming not, but I could always be mistaken.

> building a cat from scratch

> That would be an interesting project.

Here is the source code of the OpenBSD implementation of cat:

> https://github.com/openbsd/src/blob/master/bin/cat/cat.c

and here of the GNU coreutils implementation:

> https://github.com/coreutils/coreutils/blob/master/src/cat.c

Thus: I don't think building a cat from scratch or creating a tutorial about that topic is particularly hard (even though the HN audience would likely be interested in it). :-)

> I don't know how they define `MAX`, but I'm guessing it's a typical "a>b?a:b"

Indeed: https://github.com/openbsd/src/blob/master/sys/sys/param.h#L...

> Then `SYS_kbind` seems to be a signed int.

It's an untyped #define: https://github.com/openbsd/src/blob/master/sys/sys/syscall.h...

I believe your whole analysis is correct, that running an elf file with an openbsd.syscalls entry with .sysno > INT_MAX will allow an out-of-bounds write.

I can reproduce it. And this is the commit that causes the issue: https://github.com/openbsd/src/commit/d21788ce70be80e9c4ed0c52c149e01147c4a823

This doesn’t really change your conclusion, but I think that’s the wrong file. This is the real doas afaict: https://github.com/openbsd/src/blob/master/usr.bin/doas/doas...

Still just a tidy 1072 lines in that folder though.

I spent 5 minutes staring at your file trying to understand how on earth it does the things in the man page, but of course it doesn’t.

OpenBSD developers are making serious effort to kill off indirect syscalls, the base system is completely clean, take a look at the work Andrew Fresh did to adapt Perl. He write a complete syscall "dispatcher" or emulator for the Perl syscall function so that it calls the libc stubs.

https://github.com/openbsd/src/commit/312e26c80be876012ae979...

The ports tree is also being cleansed of syscall(2) usage, until they're all gone.

msyscall, pinsyscall, recent mandatory IBT/BTI, xonly. OpenBSD is making waves, but people aren't really seeing them yet.

Actually, I got it wrong, too many vulnerabilities in flight. They did fix it: https://github.com/openbsd/src/commit/375ccafb2eb77de6cf240e...