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=========================================================== Ubuntu Security Notice USN-659-1 October 27, 2008 linux, linux-source-2.6.15/22 vulnerabilities CVE-2007-6716, CVE-2008-2372, CVE-2008-3276, CVE-2008-3525, CVE-2008-3526, CVE-2008-3534, CVE-2008-3535, CVE-2008-3792, CVE-2008-3831, CVE-2008-3915, CVE-2008-4113, CVE-2008-4445 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 7.10 Ubuntu 8.04 LTS This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: linux-image-2.6.15-52-386 2.6.15-52.73 linux-image-2.6.15-52-686 2.6.15-52.73 linux-image-2.6.15-52-amd64-generic 2.6.15-52.73 linux-image-2.6.15-52-amd64-k8 2.6.15-52.73 linux-image-2.6.15-52-amd64-server 2.6.15-52.73 linux-image-2.6.15-52-amd64-xeon 2.6.15-52.73 linux-image-2.6.15-52-hppa32 2.6.15-52.73 linux-image-2.6.15-52-hppa32-smp 2.6.15-52.73 linux-image-2.6.15-52-hppa64 2.6.15-52.73 linux-image-2.6.15-52-hppa64-smp 2.6.15-52.73 linux-image-2.6.15-52-itanium 2.6.15-52.73 linux-image-2.6.15-52-itanium-smp 2.6.15-52.73 linux-image-2.6.15-52-k7 2.6.15-52.73 linux-image-2.6.15-52-mckinley 2.6.15-52.73 linux-image-2.6.15-52-mckinley-smp 2.6.15-52.73 linux-image-2.6.15-52-powerpc 2.6.15-52.73 linux-image-2.6.15-52-powerpc-smp 2.6.15-52.73 linux-image-2.6.15-52-powerpc64-smp 2.6.15-52.73 linux-image-2.6.15-52-server 2.6.15-52.73 linux-image-2.6.15-52-server-bigiron 2.6.15-52.73 linux-image-2.6.15-52-sparc64 2.6.15-52.73 linux-image-2.6.15-52-sparc64-smp 2.6.15-52.73 Ubuntu 7.10: linux-image-2.6.22-15-386 2.6.22-15.59 linux-image-2.6.22-15-cell 2.6.22-15.59 linux-image-2.6.22-15-generic 2.6.22-15.59 linux-image-2.6.22-15-hppa32 2.6.22-15.59 linux-image-2.6.22-15-hppa64 2.6.22-15.59 linux-image-2.6.22-15-itanium 2.6.22-15.59 linux-image-2.6.22-15-lpia 2.6.22-15.59 linux-image-2.6.22-15-lpiacompat 2.6.22-15.59 linux-image-2.6.22-15-mckinley 2.6.22-15.59 linux-image-2.6.22-15-powerpc 2.6.22-15.59 linux-image-2.6.22-15-powerpc-smp 2.6.22-15.59 linux-image-2.6.22-15-powerpc64-smp 2.6.22-15.59 linux-image-2.6.22-15-rt 2.6.22-15.59 linux-image-2.6.22-15-server 2.6.22-15.59 linux-image-2.6.22-15-sparc64 2.6.22-15.59 linux-image-2.6.22-15-sparc64-smp 2.6.22-15.59 linux-image-2.6.22-15-ume 2.6.22-15.59 linux-image-2.6.22-15-virtual 2.6.22-15.59 linux-image-2.6.22-15-xen 2.6.22-15.59 Ubuntu 8.04 LTS: linux-image-2.6.24-21-386 2.6.24-21.43 linux-image-2.6.24-21-generic 2.6.24-21.43 linux-image-2.6.24-21-hppa32 2.6.24-21.43 linux-image-2.6.24-21-hppa64 2.6.24-21.43 linux-image-2.6.24-21-itanium 2.6.24-21.43 linux-image-2.6.24-21-lpia 2.6.24-21.43 linux-image-2.6.24-21-lpiacompat 2.6.24-21.43 linux-image-2.6.24-21-mckinley 2.6.24-21.43 linux-image-2.6.24-21-openvz 2.6.24-21.43 linux-image-2.6.24-21-powerpc 2.6.24-21.43 linux-image-2.6.24-21-powerpc-smp 2.6.24-21.43 linux-image-2.6.24-21-powerpc64-smp 2.6.24-21.43 linux-image-2.6.24-21-rt 2.6.24-21.43 linux-image-2.6.24-21-server 2.6.24-21.43 linux-image-2.6.24-21-sparc64 2.6.24-21.43 linux-image-2.6.24-21-sparc64-smp 2.6.24-21.43 linux-image-2.6.24-21-virtual 2.6.24-21.43 linux-image-2.6.24-21-xen 2.6.24-21.43 After a standard system upgrade you need to reboot your computer to effect the necessary changes. ATTENTION: For systems without the hardy-updates pocket enabled, the 8.04 kernel update will include an unavoidable ABI change. The kernel update has been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. If you use linux-restricted-modules, you have to update that package as well to get modules which work with the new kernel version. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-386, linux-powerpc, linux-amd64-generic), a standard system upgrade will automatically perform this as well. Details follow: It was discovered that the direct-IO subsystem did not correctly validate certain structures. A local attacker could exploit this to cause a system crash, leading to a denial of service. (CVE-2007-6716) It was discovered that the disabling of the ZERO_PAGE optimization could lead to large memory consumption. A local attacker could exploit this to allocate all available memory, leading to a denial of service. (CVE-2008-2372) It was discovered that the Datagram Congestion Control Protocol (DCCP) did not correctly validate its arguments. If DCCP was in use, a remote attacker could send specially crafted network traffic and cause a system crash, leading to a denial of service. (CVE-2008-3276) It was discovered that the SBNI WAN driver did not correctly check for the NET_ADMIN capability. A malicious local root user lacking CAP_NET_ADMIN would be able to change the WAN device configuration, leading to a denial of service. (CVE-2008-3525) It was discovered that the Stream Control Transmission Protocol (SCTP) did not correctly validate the key length in the SCTP_AUTH_KEY option. If SCTP is in use, a remote attacker could send specially crafted network traffic that would crash the system, leading to a denial of service. (CVE-2008-3526) It was discovered that the tmpfs implementation did not correctly handle certain sequences of inode operations. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2008-3534) It was discovered that the readv/writev functions did not correctly handle certain sequences of file operations. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2008-3535) It was discovered that SCTP did not correctly validate its userspace arguments. A local attacker could call certain sctp_* functions with malicious options and cause a system crash, leading to a denial of service. (CVE-2008-3792, CVE-2008-4113, CVE-2008-4445) It was discovered the the i915 video driver did not correctly validate memory addresses. A local attacker could exploit this to remap memory that could cause a system crash, leading to a denial of service. (CVE-2008-3831) Johann Dahm and David Richter discovered that NFSv4 did not correctly handle certain file ACLs. If NFSv4 is in use, a local attacker could create a malicious ACL that could cause a system crash, leading to a denial of service. (CVE-2008-3915)