Numerous problems referencing userspace memory were identified in several device drivers by Al Viro using the sparse tool. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2004-0495 to this issue. A problem was found where userspace code could execute certain floating point instructions from signal handlers which would cause the kernel to lock up. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2004-0554 to this issue. Previous kernels contained a patch against the framebuffer ioctl code which turned out to be unnecessary. This has been dropped in this update. A memory leak in the E1000 network card driver has been fixed. The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2004-0535 to this issue. Previously, inappropriate permissions were set on /proc/scsi/qla2300/HbaApiNode The Common Vulnerabilities and Exposures project (cve.mitre.org) assigned the name CVE-2004-0587 to this issue. Support for systems with more than 4GB of memory was previously unavailable. The 686 SMP kernel now supports this configuration. (Bugzilla #122960) Support for SMP on 586's was also previously not included. This has also been rectified. (Bugzilla #111871)