News

=========================================================== Ubuntu Security Notice USN-311-1 July 11, 2006 linux-source-2.6.10/-2.6.12/-2.6.15 vulnerabilities CVE-2006-0039, CVE-2006-2445, CVE-2006-2448, CVE-2006-2451 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 5.04 Ubuntu 5.10 Ubuntu 6.06 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 5.04: linux-image-2.6.10-6-386 2.6.10-34.21 linux-image-2.6.10-6-686 2.6.10-34.21 linux-image-2.6.10-6-686-smp 2.6.10-34.21 linux-image-2.6.10-6-amd64-generic 2.6.10-34.21 linux-image-2.6.10-6-amd64-k8 2.6.10-34.21 linux-image-2.6.10-6-amd64-k8-smp 2.6.10-34.21 linux-image-2.6.10-6-amd64-xeon 2.6.10-34.21 linux-image-2.6.10-6-hppa32 2.6.10-34.21 linux-image-2.6.10-6-hppa32-smp 2.6.10-34.21 linux-image-2.6.10-6-hppa64 2.6.10-34.21 linux-image-2.6.10-6-hppa64-smp 2.6.10-34.21 linux-image-2.6.10-6-itanium 2.6.10-34.21 linux-image-2.6.10-6-itanium-smp 2.6.10-34.21 linux-image-2.6.10-6-k7 2.6.10-34.21 linux-image-2.6.10-6-k7-smp 2.6.10-34.21 linux-image-2.6.10-6-mckinley 2.6.10-34.21 linux-image-2.6.10-6-mckinley-smp 2.6.10-34.21 linux-image-2.6.10-6-power3 2.6.10-34.21 linux-image-2.6.10-6-power3-smp 2.6.10-34.21 linux-image-2.6.10-6-power4 2.6.10-34.21 linux-image-2.6.10-6-power4-smp 2.6.10-34.21 linux-image-2.6.10-6-powerpc 2.6.10-34.21 linux-image-2.6.10-6-powerpc-smp 2.6.10-34.21 linux-image-2.6.10-6-sparc64 2.6.10-34.21 linux-image-2.6.10-6-sparc64-smp 2.6.10-34.21 linux-patch-ubuntu-2.6.10 2.6.10-34.21 Ubuntu 5.10: linux-image-2.6.12-10-386 2.6.12-10.35 linux-image-2.6.12-10-686 2.6.12-10.35 linux-image-2.6.12-10-686-smp 2.6.12-10.35 linux-image-2.6.12-10-amd64-generic 2.6.12-10.35 linux-image-2.6.12-10-amd64-k8 2.6.12-10.35 linux-image-2.6.12-10-amd64-k8-smp 2.6.12-10.35 linux-image-2.6.12-10-amd64-xeon 2.6.12-10.35 linux-image-2.6.12-10-hppa32 2.6.12-10.35 linux-image-2.6.12-10-hppa32-smp 2.6.12-10.35 linux-image-2.6.12-10-hppa64 2.6.12-10.35 linux-image-2.6.12-10-hppa64-smp 2.6.12-10.35 linux-image-2.6.12-10-iseries-smp 2.6.12-10.35 linux-image-2.6.12-10-itanium 2.6.12-10.35 linux-image-2.6.12-10-itanium-smp 2.6.12-10.35 linux-image-2.6.12-10-k7 2.6.12-10.35 linux-image-2.6.12-10-k7-smp 2.6.12-10.35 linux-image-2.6.12-10-mckinley 2.6.12-10.35 linux-image-2.6.12-10-mckinley-smp 2.6.12-10.35 linux-image-2.6.12-10-powerpc 2.6.12-10.35 linux-image-2.6.12-10-powerpc-smp 2.6.12-10.35 linux-image-2.6.12-10-powerpc64-smp 2.6.12-10.35 linux-image-2.6.12-10-sparc64 2.6.12-10.35 linux-image-2.6.12-10-sparc64-smp 2.6.12-10.35 linux-patch-ubuntu-2.6.12 2.6.12-10.35 Ubuntu 6.06 LTS: linux-image-2.6.15-26-386 2.6.15-26.44 linux-image-2.6.15-26-686 2.6.15-26.44 linux-image-2.6.15-26-amd64-generic 2.6.15-26.44 linux-image-2.6.15-26-amd64-k8 2.6.15-26.44 linux-image-2.6.15-26-amd64-server 2.6.15-26.44 linux-image-2.6.15-26-amd64-xeon 2.6.15-26.44 linux-image-2.6.15-26-hppa32 2.6.15-26.44 linux-image-2.6.15-26-hppa32-smp 2.6.15-26.44 linux-image-2.6.15-26-hppa64 2.6.15-26.44 linux-image-2.6.15-26-hppa64-smp 2.6.15-26.44 linux-image-2.6.15-26-itanium 2.6.15-26.44 linux-image-2.6.15-26-itanium-smp 2.6.15-26.44 linux-image-2.6.15-26-k7 2.6.15-26.44 linux-image-2.6.15-26-mckinley 2.6.15-26.44 linux-image-2.6.15-26-mckinley-smp 2.6.15-26.44 linux-image-2.6.15-26-powerpc 2.6.15-26.44 linux-image-2.6.15-26-powerpc-smp 2.6.15-26.44 linux-image-2.6.15-26-powerpc64-smp 2.6.15-26.44 linux-image-2.6.15-26-server 2.6.15-26.44 linux-image-2.6.15-26-server-bigiron 2.6.15-26.44 linux-image-2.6.15-26-sparc64 2.6.15-26.44 linux-image-2.6.15-26-sparc64-smp 2.6.15-26.44 After a standard system upgrade you need to reboot your computer to effect the necessary changes. ATTENTION: Due to an unavoidable ABI change the Ubuntu 6.06 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 (linux-386, linux-powerpc, linux-amd64-generic), a standard system upgrade will automatically perform this as well. Details follow: A race condition was discovered in the do_add_counters() functions. Processes which do not run with full root privileges, but have the CAP_NET_ADMIN capability can exploit this to crash the machine or read a random piece of kernel memory. In Ubuntu there are no packages that are affected by this, so this can only be an issue for you if you use third-party software that uses Linux capabilities. (CVE-2006-0039) John Stultz discovered a faulty BUG_ON trigger in the handling of POSIX timers. A local attacker could exploit this to trigger a kernel oops and crash the machine. (CVE-2006-2445) Dave Jones discovered that the PowerPC kernel did not perform certain required access_ok() checks. A local user could exploit this to read arbitrary kernel memory and crash the kernel on 64-bit systems, and possibly read arbitrary kernel memory on 32-bit systems. (CVE-2006-2448) A design flaw was discovered in the prctl(PR_SET_DUMPABLE, ...) system call, which allowed a local user to have core dumps created in a directory he could not normally write to. This could be trivially exploited to execute arbitrary code with full root privileges. This flaw only affects Ubuntu 6.06 LTS. (CVE-2006-2451) In addition, the Ubuntu 6.06 LTS update fixes a range of bugs.