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=========================================================== Ubuntu Security Notice USN-715-1 January 29, 2009 linux vulnerabilities CVE-2008-5079, CVE-2008-5182, CVE-2008-5300, CVE-2008-5395, CVE-2008-5700, CVE-2008-5702 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 8.10 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 8.10: linux-image-2.6.27-11-generic 2.6.27-11.27 linux-image-2.6.27-11-server 2.6.27-11.27 linux-image-2.6.27-11-virtual 2.6.27-11.27 After a standard system upgrade you need to reboot your computer to effect the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have 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-generic, linux-server, linux-powerpc), a standard system upgrade will automatically perform this as well. Details follow: Hugo Dias discovered that the ATM subsystem did not correctly manage socket counts. A local attacker could exploit this to cause a system hang, leading to a denial of service. (CVE-2008-5079) It was discovered that the inotify subsystem contained watch removal race conditions. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2008-5182) Dann Frazier discovered that in certain situations sendmsg did not correctly release allocated memory. A local attacker could exploit this to force the system to run out of free memory, leading to a denial of service. (CVE-2008-5300) Helge Deller discovered that PA-RISC stack unwinding was not handled correctly. A local attacker could exploit this to crash the system, leading do a denial of service. This did not affect official Ubuntu kernels, but was fixed in the source for anyone performing HPPA kernel builds. (CVE-2008-5395) It was discovered that the ATA subsystem did not correctly set timeouts. A local attacker could exploit this to cause a system hang, leading to a denial of service. (CVE-2008-5700) It was discovered that the ib700 watchdog timer did not correctly check buffer sizes. A local attacker could send a specially crafted ioctl to the device to cause a system crash, leading to a denial of service. (CVE-2008-5702)