This kernel update for CentOS Linux Advanced Server 2.1 addresses some security issues and provides minor bug fixes.
The Linux kernel handles the basic functions of the operating system. A number of vulnerabilities were found in the CentOS Linux Advanced Server kernel. These vulnerabilities could allow a local user to obtain elevated (root) privileges. The vulnerabilities existed in a number of drivers, including stradis, rio500, se401, apm, usbserial, and usbvideo. Additionally, a number of bugs have been fixed, and some small feature enhancements have been added. - Failed READA requests could be interpreted as I/O errors under high load on SMP; this has been fixed. - In rare cases, TLB entries could be corrupted on SMP Pentium IV systems; this potential for corruption has been fixed. Third-party modules will need to be recompiled to take advantage of these fixes. - The latest tg3 driver fixes have been included; the tg3 driver now supports more hardware. - A mechanism is provided to specify the location of core files and to set the name pattern to include the UID, program, hostname, and PID of the process that caused the core dump. A number of SCSI fixes have also been included: - Configure sparse LUNs in the qla2200 driver - Clean up erroneous accounting data as seen by /proc/partitions and iostat - Allow up to 128 scsi disks - Do not start logical units that require manual intervention, avoiding unnecessary startup delays - Improve SCSI layer throughput by properly clustering DMA requests All users of CentOS Linux Advanced Server are advised to upgrade to the errata packages.