Post #1899083
2026-04-30 23:33 UTC
Just tested on most recent raspbian (debian on raspberry pi) linux and Copy Fail for sure fucks up 'su' pages in memory, but the command simply becomes unexecutable. It does not drop me to a root login because it cannot execute the 'su' command. Indeed the '/bin/su' file itself remains untouched.
Reboot and it gets cleared out of memory. But I think "every kernel since 2017" might not be exactly right. Definitely make sure you test this.
https://copy.fail
#CopyFail #Raspbian
Replies (2)
-
@mckern@xoxo.zone 2026-05-01 01:22
@dtauvdiodr@c.im I have an N5105 running Debian 12, and it just hangs at a password prompt for me there. This doesn't feel like *quite* the apocalypse that it's made out to be.
-
@hexaheximal@mstdn.social 2026-05-01 03:50
@dtauvdiodr@c.im If it makes su a broken executable, that means it did succeed and the system is vulnerable. The code injected wasn't made for an ARM CPU though, so it won't actually run as-is.