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cpach

8,010 karma · joined May 27, 2008

Sono Rintracciabile.

Residing in Södermanland, Sweden.

Get in touch? E-mail: c (at) tunnel53 (dot) net

Website: https://www.tunnel53.net/

Interesting HN people to follow: ('tptacek 'cperciva 'tlb 'FiloSottile 'Animats 'DannyBee 'mcpherrinm 'phasmantistes 'pbsd 'patio11)

submissionscomments
cpach··on Ask HN: Any New Computer Ideas?
Clickable link for the curious: https://www.cs.unm.edu/~ackley/
cpach··on Google Cache used to have a copy of this page at
https://www.hornet.org/wikipedia-notes.txt seems to be notes related to a deleted Wikipedia page about the Hornet Archive. The wiki page itself seems to be mirrored at this URL: https://www.hornet.org/wikipedia-hornet.txt
cpach··on Ask HN: What's Up with Archive.today?
Works fine for me. (Sweden, tried on my smartphone using LTE connection.)
cpach··on Lobste.rs is now running on SQLite
FWIW, you might want to consider publishing your e-mail address in your HN profile or on your website. Otherwise it’s hard for people to get in touch with you.
cpach··on TLS certificates for internal services done right
Why does it matter?
cpach··on Scheme Is a Hoot
Direct link to Hoot: https://spritely.institute/hoot/
cpach··on Ask HN: What home printer do you use/recommend?
Brother HL-L2350DW (monochrome). Those things are very reliable.
cpach··on Stripe, Anthropic, and OpenAI are backing an effort to stop respiratory infecti
dupe: https://news.ycombinator.com/item?id=48660159
cpach··on $500M fund to make respiratory infections like colds and flu a thing of the past
See also https://news.ycombinator.com/item?id=48660159 (1 comment so far)
cpach··on DisplayMate
Why is this on the front page? :)
cpach··on Many Let's Encrypt renewals had errors today
Feel free to launch your own CA.
cpach··on Helion obtains regulatory approval to operate fusion power plant in Washington
Interesting!
cpach··on What is the most valuable skill you've learned outside of your job?
Reading, writing, cooking, child-rearing.
cpach··on macOS Container Machines
What’s the performance when you do that?
cpach··on Signal – Deleted, but Not Forgotten
Dupe: https://news.ycombinator.com/item?id=48265498
cpach··on Ask HN: What's New in Crypto?
Uhm… cryptography or cryptocurrency?
cpach··on Fragnesia Made Public as Latest Linux Local Privilege Escalation Vulnerability
For those who can I would recommend upgrading to Wireguard.
cpach··on Claude Account Suspended Seconds After Purchase?
If it was for personal use, surely there would be some kind of consumer organization or ombudsman one could contact for advice?

For B2B, I guess the local chamber of commerce might be able to advice.

cpach··on Obsidian plugin was abused to deploy a remote access trojan
Same here, zero plugins for me.
cpach··on Reflections on NetBSD 11
Regarding su…

  su -
might yield better results.
cpach··on Copy Fail 2: Electric Boogaloo
Does anyone know how to mitigate this one? Is it sufficient to disable the esp4/esp6/rxrpc modules?
cpach··on Copyfail2
Main discussion here: https://news.ycombinator.com/item?id=48058393
cpach··on SQLite Is a Library of Congress Recommended Storage Format
Welcome to Hacker News! Please write in English here. Thank you in advance from a long-time member :)
cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
No, I haven’t.

My concern is to try to understand the mechanisms of the exploit.

Copy Fail is not simply ”hey, kernel, give me root”. I would say it’s more general than that. It’s rather: ”Hey, kernel, when you present file /foo to a process, make the contents of that file appear according to my wishes”. Which can be used (in various ways) to advance the attacker’s position.

That’s why I think it’s interesting to ponder if that power allows the attacker to simply sneak past security policies such as allowPrivilegeEscalation=false.

cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
Many? No, I don’t agree.
cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
Sure. But it would probably still be a good thing if the kernel maintainers could tear out AF_ALG.
cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
That might make Copy Fail harder to exploit, but I still wouldn’t bet money on CF being impossible to use in that scenario.
cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
How does allowPrivilegeEscalation=False help?
cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
If so, I would look into applying a decent seccomp profile.

Other hardening solutions could be to run the workloads inside of a VM such as Firecracker, or gVisor. But that might be more work to implement compared to seccomp.

cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
How?
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