Debian DSA-1800-1 : linux-2.6 - denial of service/privilege escalation/sensitive memory leak


Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, privilege escalation or a sensitive memory leak. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2009-0028 Chris Evans discovered a situation in which a child process can send an arbitrary signal to its parent. - CVE-2009-0834 Roland McGrath discovered an issue on amd64 kernels that allows local users to circumvent system call audit configurations which filter based on the syscall numbers or argument details. - CVE-2009-0835 Roland McGrath discovered an issue on amd64 kernels with CONFIG_SECCOMP enabled. By making a specially crafted syscall, local users can bypass access restrictions. - CVE-2009-0859 Jiri Olsa discovered that a local user can cause a denial of service (system hang) using a SHM_INFO shmctl call on kernels compiled with CONFIG_SHMEM disabled. This issue does not affect prebuilt Debian kernels. - CVE-2009-1046 Mikulas Patocka reported an issue in the console subsystem that allows a local user to cause memory corruption by selecting a small number of 3-byte UTF-8 characters. - CVE-2009-1072 Igor Zhbanov reported that nfsd was not properly dropping CAP_MKNOD, allowing users to create device nodes on file systems exported with root_squash. - CVE-2009-1184 Dan Carpenter reported a coding issue in the selinux subsystem that allows local users to bypass certain networking checks when running with compat_net=1. - CVE-2009-1192 Shaohua Li reported an issue in the AGP subsystem they may allow local users to read sensitive kernel memory due to a leak of uninitialized memory. - CVE-2009-1242 Benjamin Gilbert reported a local denial of service vulnerability in the KVM VMX implementation that allows local users to trigger an oops. - CVE-2009-1265 Thomas Pollet reported an overflow in the af_rose implementation that allows remote attackers to retrieve uninitialized kernel memory that may contain sensitive data. - CVE-2009-1337 Oleg Nesterov discovered an issue in the exit_notify function that allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application. - CVE-2009-1338 Daniel Hokka Zakrisson discovered that a kill(-1) is permitted to reach processes outside of the current process namespace. - CVE-2009-1439 Pavan Naregundi reported an issue in the CIFS filesystem code that allows remote users to overwrite memory via a long nativeFileSystem field in a Tree Connect response during mount.