Updated kernel packages for Red Hat Linux 9 are now available. The kernel package version 2.4.20-6 has a security hole in ptrace. Using USB CD-ROMs on some ServerWorks systems can hang older versions of the kernel.
The Linux kernel handles the basic functions of the operating system. A vulnerability in ptrace handling has been found in version 2.4.20-6 of the kernel. This vulnerability makes it possible for local users to gain elevated (root) privileges without authorization. This vulnerability is fixed in kernel-2.4.20-8 and kernel-2.4.20-9. Please note this vulnerability only affects Red Hat Linux 9 boxed sets manufactured for distribution within the United States. The part numbers, which can be found on the bottom flap of the box, are RHF0120US and RHF0121US. Copies of Red Hat Linux 9 obtained through other means (such as from Red Hat Network, FTP, or international boxed sets) already contain kernel-2.4.20-8 and are therefore not vulnerable to this issue. An NPTL support defect in the kernel causes bind not to restart on uniprocessor systems; this bug has been fixed in kernel-2.4.20-9. USB mass storage devices (in particular, USB CD-ROMs) and the ohci driver sometimes causes system hangs; this defect has been fixed. Additionally, support for the tg3, e100, and e1000 drivers has been added.