Dirty Frag is a vulnerability in Linux that allows an attacker to gain higher access or permissions than they are normally allowed on the system This vulnerability was disclosed earlier than planned due to an embargo break, which means information about the vulnerability was released publicly before the agreed-upon disclosure date. It’s a part of Linux kernel page cache exploits — following Dirty Pipe (2022) and Copy Fail (earlier this year). What are Linux kernel page cache exploits? The page cache in Linux is a system memory area where frequently accessed file data is temporarily stored. It speeds up file operations because reading from memory is faster than reading from disk. However, if an attacker can manipulate the page cache …
