/proc/tty/driver/serial in Linux 2.4.x reveals the exact number of characters used in serial links, which could allow local users to obtain potentially sensitive information such as the length of passwords.
A patch for shadow-utils 20000902 causes the useradd command to create a mail spool files with read/write privileges of the new user's group (mode 660), which allows other users in the same group to read or modify the new user's incoming email.
Integer overflow in the vcresize function in the Linux kernel 2.4 and 2.6 before 2.6.10 allows local users to cause a denial of service (kernel crash) via a short new screen value, which leads to a buffer overflow.
Integer overflow in the ipoptionsget function in the Linux kernel before 2.6.10 allows local users to cause a denial of service (kernel crash) via a cmsglen that contains a -1, which leads to a buffer overflow.
Memory leak in the ipoptionsget function in the Linux kernel before 2.6.10 allows local users to cause a denial of service (memory consumption) by repeatedly calling the ipcmsgsend function.