Linux v2.4.x below v2.4.23 was found to contain a local root vulnerability when a multiple servers of the Debian project were compromised using a new kernel exploit. Due to an integer overflow in the do_brk() system call, it is possible for local users to gain root access. Users of kernel v2.4.22 and below should upgrade.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/32302/kernel-2.2.22.txt
Source: https://packetstormsecurity.com/files/32302/kernel-2.2.22.txt.html