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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 CVE-2026-31431: Copy Fail vs. rootless containers
I would say any sanely written application would fall back to doing the requested operations in userspace if it cannot use the AF_ALG socket.

It could fail though. But I have not yet heard of anyone noticing big problems due to disabling the problematic modules. And I have not noticed any such issues on our systems at ${DAYJOB}.

IMHO, since these parts of the Linux kernel are so crappy I personally would say disabling them is a good default choice. YMMV. But if you encounter problems, then you can always re-enable the modules. (Preferably after upgrading your kernel, obviously.)

cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
Good enough for what?

I could be wrong, but I’m not sure those settings are enough to mitigate Copy Fail.

If your distro offers a patched kernel, it’s best to upgrade to that one and reboot.

You can also disable the vulnerable module (how to do it depends on what distro you’re using). But if you stay on an old unpatched kernel you might be exposed to other vulnerabilites.

cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
Well at least if it’s crufty stuff like AF_ALG that barely no-one is using and is kind of a forgotten place of the kernel.

I don’t oppose reasonable crypto in the kernel, like WireGuard.

cpach··on CVE-2026-31431: Copy Fail vs. rootless containers
What is the false premise in the article?
cpach··on PyInfra 3.8.0 Is Out
We had lectures on Frame Relay and stuff like that in uni, but I’ve never ever touched that stuff (:
cpach··on This Month in Ladybird – April 2026
?
cpach··on Ask HN: Should we collectively stop spell checking and fixing grammar
If you happen to use Vim, I think it has a built-in spellchecker.
cpach··on Ask HN: European Tech Alternatives?
“Has anyone else had a similar experience?”

Yes. Same here. The owner has never replied to my emails. I have also had contact with vendors who received the same treatment.

To be honest I’m disappointed. I have seen multiple persons linking to that site, but if it’s not updated and the owner doesn’t answer e-mail then it’s not really a reasonable reference, IMO.

cpach··on Tailscale's new macOS home
I vastly prefer Mac over Windows, but I think you have a good point. This is definitely one area where Microsoft found a more reasonable solution.
cpach··on What young workers are doing to AI-proof themselves
https://archive.ph/NtVHd
cpach··on Widely used Trivy scanner compromised in ongoing supply-chain attack
Main thread here: https://news.ycombinator.com/item?id=47449498
cpach··on Trivy Under Attack Again: Widespread GitHub Actions Tag Compromise Exposes
Main thread here: https://news.ycombinator.com/item?id=47449498
cpach··on Honda is killing its EVs
Software. Music.
cpach··on WolfIP: Lightweight TCP/IP stack with no dynamic memory allocations
“GPL is toxic for embedded commercial software”

Why is that?

cpach··on What does " 2>&1 " mean?
If you see an account that you suspect is a spambot, please send an email to hn@ycombinator.com, then the mods can take action.
cpach··on What does " 2>&1 " mean?
Are you sure you understood the comment you replied to?

I agree that 2>&1 is not complex. But I think I speak for many Bash users when I say that this idiom looks bad, is hard to Google, hard to read and hard to memorize.

cpach··on Ask HN: Who Is Using XMPP?
I was I heavy XMPP user back in the 00s. But on the whole it never really took off, and when Google killed XMPP support in their chat it was a severe blow. As for why it didn’t reach a larger userbase, I think the reasons that Moxie described in The ecosystem is moving[0] are spot on.

[0] https://signal.org/blog/the-ecosystem-is-moving/

cpach··on macOS's Little-Known Command-Line Sandboxing Tool (2025)
No, I don’t think so?

The .git folder will likely contain the URL to the repo, but not any credentials.

cpach··on Meta to retire messenger desktop app and messenger.com in April 2026
Guess I’ll stop using Messenger…
cpach··on macOS's Little-Known Command-Line Sandboxing Tool (2025)
Does anyone have any details regarding the deprecation? I wonder why Apple made this decision.
cpach··on Upcoming changes to Let's Encrypt and how they affect XMPP server operators
The ones who monitor their domains in the CT log.

(Mom-and-pop-stores probably won’t. Other orgs might.)

cpach··on Ask HN: Any Successful Co-Ops of Software Engineers
The one I’ve heard of is Igalia

https://www.igalia.com/

cpach··on Netbird – Open Source Zero Trust Networking
Are you on the Netbird dev team? :)
cpach··on Netbird – Open Source Zero Trust Networking
AFAICT you and 'ysleepy are in agreement.
cpach··on Debian Taco – Towards a GitSecDevOps Debian
Very cool project!
cpach··on 6-Day and IP Address Certificates Are Generally Available
There is a solution for smoothing out the traffic: RFC 9733, ACME Renewal Information (ARI) Extension

https://datatracker.ietf.org/doc/rfc9773/

cpach··on 6-Day and IP Address Certificates Are Generally Available
If I would use short-lived certs I would make sure to choose an ACME client that has support for ARI (ACME Renewal Information). Then the CA will tell the client when it’s time to renew.
cpach··on 6-Day and IP Address Certificates Are Generally Available
There’s also the DNS-01 challenge that works well for devices on private networks.
cpach··on 6-Day and IP Address Certificates Are Generally Available
It’s capped to 15 years.

In another comment someone linked to a document from the Chrome team.

Here’s a quote that I found interesting:

“In Chrome Root Program Policy 1.5, we landed changes that set a maximum ‘term-limit’ (i.e., period of inclusion) for root CA certificates included in the Chrome Root Store to 15 years.

While we still prefer a more agile approach, and may again explore this in the future, we encourage CA Owners to explore how they can adopt more frequent root rotation.”

https://googlechrome.github.io/chromerootprogram/moving-forw...

cpach··on 6-Day and IP Address Certificates Are Generally Available
Remember that there are lots of CAs, and quite many of them are based outside of the US. Those CAs currently do not offer ACME services for free, but there’s nothing stopping them from doing so.

I would say that the WebPKI system seems to be quite resilient, even in the face of strong geopolitical tension.

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