CVE-2026-31431. 100% Reliable Linux LPE — no race, no per-distro offsets, page-cache write that bypasses on-disk file-integrity tools and crosses containers. Found by Xint Code.
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.
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.
BLOB already includes “binary”. That’s what the first B is for.
Sorry, couldn’t stop myself.
No one means BLOB when they say blob, it’s a backronym mostly for fun
The compressed binary blob is just a 160 B ELF when uncompressed. I don’t think you can do much with that.
I bet you could gain root on many old kernels
You could probably write all zeros to a file. Say, /dev/sda?
???
profit