Linux

65096 readers

996 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 7 years ago

MODERATORS

nooter692@lemmy.ml

AgreeableLandscape@lemmy.ml

MarcellusDrum@lemmy.ml

cypherpunks@lemmy.ml

cyclohexane@lemmy.ml

d3Xt3r@lemmy.nz

251

Copy Fail (CVE-2026-31431) is a trivially exploitable logic bug in Linux, reachable on all major distros released in the last 9 years. A small, portable python script gets root on all platforms. (copy.fail)

submitted 1 week ago by rabber@lemmy.ca to c/linux@lemmy.ml

38 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] MoogleMaestro@lemmy.zip 67 points 1 week ago (3 children)

It's a bit strange that this code requires a binary blob to verify, I think people who want to experiment with this should take some caution as it could be an exploit-in-an-exploit (user is highlighting a real exploit, but also trying to take advantage of people testing by effectively installing a back-door.) I won't say that's happening for sure, but take running this yourself with extreme caution.

[–] JustTesting@lemmy.hogru.ch 1 points 6 days ago

You can find a cleaned up version here

[–] AcornTickler@sh.itjust.works 23 points 1 week ago (3 children)

BLOB already includes "binary". That's what the first B is for.

Sorry, couldn't stop myself.

[–] MoogleMaestro@lemmy.zip 2 points 6 days ago* (last edited 6 days ago)

I had always heard "binary blob" said when it came to opaque code, but I see that blob is what is used to describe unexplained binary data as a whole in database lingo, so I'm willing to say your usage of it is probably more correct than mine here, assuming the binary data isn't an actual program (afaik there's no elf-file like characteristics but who knows.). 😇

[–] embed_me@programming.dev 16 points 1 week ago

No one means BLOB when they say blob, it's a backronym mostly for fun

[–] Aatube@piefed.social 4 points 1 week ago

Apparently that's only for blob storage (now "object storage), not https://en.wikipedia.org/wiki/Binary_blob

[–] Aatube@piefed.social 5 points 1 week ago (2 children)

The compressed binary blob is just a 160 B ELF when uncompressed. I don't think you can do much with that.

[–] atzanteol@sh.itjust.works 10 points 1 week ago (1 children)

You could probably write all zeros to a file. Say, /dev/sda?

[–] flyingSock@feddit.org 6 points 1 week ago* (last edited 1 week ago)

???

profit

[–] quick_snail@feddit.nl 8 points 1 week ago

I bet you could gain root on many old kernels