The Linux kernel These updated packages contain 730 bug fixes and enhancements for the Linux kernel. Space precludes a detailed description of each of these changes in this advisory and users are therefore directed to the release notes for Red Hat Enterprise Linux 5.3 for information on 97 of the most significant of these changes. Details of three security-related bug fixes are set out below, along with notes on other broad categories of change not covered in the release notes. For more detailed information on specific bug fixes or enhancements, please consult the Bugzilla numbers listed in this advisory. * when fput was called to close a socket, the __scm_destroy function in the Linux kernel could make indirect recursive calls to itself. This could, potentially, lead to a denial of service issue. * a flaw was found in the Asynchronous Transfer Mode subsystem. A local, unprivileged user could use the flaw to listen on the same socket more than once, possibly causing a denial of service. * a race condition was found in the Linux kernel "inotify" watch removal and umount implementation. This could allow a local, unprivileged user to cause a privilege escalation or a denial of service. * Bug fixes and enhancements are provided for: * support for specific NICs, including products from the following manufacturers: Broadcom Chelsio Cisco Intel Marvell NetXen Realtek Sun * Fiber Channel support, including support for Qlogic qla2xxx, qla4xxx, and qla84xx HBAs and the FCoE, FCP, and zFCP protocols. * support for various CPUs, including: AMD Opteron processors with 45 nm SOI AMD Turion Ultra processors Cell processors Intel Core i7 processors * Xen support, including issues specific to the IA64 platform, systems using AMD processors, and Dell Optiplex GX280 systems * ext3, ext4, GFS2, NFS, and SPUFS * Infiniband support * common I/O , direct I/O , and queued direct I/O support * the kernel distributed lock manager * hardware issues with: SCSI, IEEE 1394 , RAID , SATA , PCI, audio, serial connections, tape-drives, and USB * ACPI, some of a general nature and some related to specific hardware including: certain Lenovo Thinkpad notebooks, HP DC7700 systems, and certain machines based on Intel Centrino processor technology. * CIFS, including Kerberos support and a tech-preview of DFS support * networking support, including IPv6, PPPoE, and IPSec * support for Intel chipsets, including: Intel Cantiga chipsets Intel Eagle Lake chipsets Intel i915 chipsets Intel i965 chipsets Intel Ibex Peak chipsets Intel chipsets offering QuickPath Interconnects * device mapping issues, including some in device mapper itself * various issues specific to IA64 and PPC * CCISS, including support for Compaq SMART Array controllers P711m and P712m and other new hardware * various issues affecting specific HP systems, including: DL785G5 XW4800 XW8600 XW8600 XW9400 * IOMMU support, including specific issues with AMD and IBM Calgary hardware * the audit subsystem * DASD support * iSCSI support, including issues specific to Chelsio T3 adapters * LVM issues * SCTP management information base support * issues with: autofs, kdump, kobject_add, libata, lpar, ptrace, and utrace * platforms using Intel Enhanced Error Handling * EDAC issues for AMD K8 and Intel i5000 * ALSA, including support for new hardware * futex support * hugepage support * Intelligent Platform Management Interface support * issues affecting NEC/Stratus servers * OFED support * SELinux * various Virtio issues All users are advised to upgrade to these updated packages, which resolve these issues and add these enhancements.