Red Hat Errata System 5.3 2011-05-02T09:38:37 Red Hat Enterprise Linux 3 The Linux kernel handles the basic functions of the operating system. This advisory includes fixes for several security issues: Petr Vandrovec discovered a flaw in the 32bit emulation code affecting the Linux 2.4 kernel on the AMD64 architecture. A local attacker could use this flaw to gain privileges. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1144 to this issue. ISEC security research discovered multiple vulnerabilities in the IGMP functionality which was backported in the Red Hat Enterprise Linux 3 kernels. These flaws could allow a local user to cause a denial of service (crash) or potentially gain privileges. Where multicast applications are being used on a system, these flaws may also allow remote users to cause a denial of service. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1137 to this issue. ISEC security research and Georgi Guninski independantly discovered a flaw in the scm_send function in the auxiliary message layer. A local user could create a carefully crafted auxiliary message which could cause a denial of service (system hang). The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1016 to this issue. A floating point information leak was discovered in the ia64 architecture context switch code. A local user could use this flaw to read register values of other processes by setting the MFH bit. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0565 to this issue. Kirill Korotaev found a flaw in load_elf_binary affecting kernels prior to 2.4.26. A local user could create a carefully crafted binary in such a way that it would cause a denial of service (system crash). The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-1234 to this issue. These packages also fix issues in the io_edgeport driver, and a memory leak in ip_options_get. Note: The kernel-unsupported package contains various drivers and modules that are unsupported and therefore might contain security problems that have not been addressed. All Red Hat Enterprise Linux 3 users are advised to upgrade their kernels to the packages associated with their machine architectures and configurations as listed in this erratum. Important Copyright 2004 Red Hat, Inc. CVE-2004-0565 CVE-2004-1016 CVE-2004-1017 CVE-2004-1137 CVE-2004-1144 CVE-2004-1234 CVE-2004-1335 CAN-2004-0565 Information leak on Linux/ia64 CAN-2004-0565 Information leak on Linux/ia64 CAN-2004-1016 CMSG validation checks CAN-2004-1137 IGMP flaws CAN-2004-1144 x86-64 privilege escalation CAN-2004-1234 kernel denial of service vulnerability and exploit cpe:/o:redhat:enterprise_linux