Important: kernel security and bug fix updateThe kernel packages contain the Linux kernel, the core of any Linuxoperating system. These updated packages fix the following security issues:A flaw was found in the handling of IEEE 802.11 frames, which affectedseveral wireless LAN modules. In certain situations, a remote attackercould trigger this flaw by sending a malicious packet over a wirelessnetwork, causing a denial of service (kernel crash).(CVE-2007-4997, Important)A memory leak was found in the Red Hat Content Accelerator kernel patch.A local user could use this flaw to cause a denial of service (memoryexhaustion). (CVE-2007-5494, Important)Additionally, the following bugs were fixed:All users are advised to upgrade to these updated packages, which resolvethese issues.