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kernel security update

Description

**CentOS Errata and Security Advisory** CESA-2009:1106 The kernel packages contain the Linux kernel, the core of any Linux operating system. Security fixes: * several flaws were found in the way the Linux kernel CIFS implementation handles Unicode strings. CIFS clients convert Unicode strings sent by a server to their local character sets, and then write those strings into memory. If a malicious server sent a long enough string, it could write past the end of the target memory region and corrupt other memory areas, possibly leading to a denial of service or privilege escalation on the client mounting the CIFS share. (CVE-2009-1439, CVE-2009-1633, Important) * the Linux kernel Network File System daemon (nfsd) implementation did not drop the CAP_MKNOD capability when handling requests from local, unprivileged users. This flaw could possibly lead to an information leak or privilege escalation. (CVE-2009-1072, Moderate) * Frank Filz reported the NFSv4 client was missing a file permission check for the execute bit in some situations. This could allow local, unprivileged users to run non-executable files on NFSv4 mounted file systems. (CVE-2009-1630, Moderate) * a missing check was found in the hypervisor_callback() function in the Linux kernel provided by the kernel-xen package. This could cause a denial of service of a 32-bit guest if an application running in that guest accesses a certain memory location in the kernel. (CVE-2009-1758, Moderate) * a flaw was found in the AGPGART driver. The agp_generic_alloc_page() and agp_generic_alloc_pages() functions did not zero out the memory pages they allocate, which may later be available to user-space processes. This flaw could possibly lead to an information leak. (CVE-2009-1192, Low) Bug fixes: * a race in the NFS client between destroying cached access rights and unmounting an NFS file system could have caused a system crash. "Busy inodes" messages may have been logged. (BZ#498653) * nanosleep() could sleep several milliseconds less than the specified time on Intel Itanium(r)-based systems. (BZ#500349) * LEDs for disk drives in AHCI mode may have displayed a fault state when there were no faults. (BZ#500120) * ptrace_do_wait() reported tasks were stopped each time the process doing the trace called wait(), instead of reporting it once. (BZ#486945) * epoll_wait() may have caused a system lockup and problems for applications. (BZ#497322) * missing capabilities could possibly allow users with an fsuid other than 0 to perform actions on some file system types that would otherwise be prevented. (BZ#497271) * on NFS mounted file systems, heavy write loads may have blocked nfs_getattr() for long periods, causing commands that use stat(2), such as ls, to hang. (BZ#486926) * in rare circumstances, if an application performed multiple O_DIRECT reads per virtual memory page and also performed fork(2), the buffer storing the result of the I/O may have ended up with invalid data. (BZ#486921) * when using GFS2, gfs2_quotad may have entered an uninterpretable sleep state. (BZ#501742) * with this update, get_random_int() is more random and no longer uses a common seed value, reducing the possibility of predicting the values returned. (BZ#499783) * the "-fwrapv" flag was added to the gcc build options to prevent gcc from optimizing away wrapping. (BZ#501751) * a kernel panic when enabling and disabling iSCSI paths. (BZ#502916) * using the Broadcom NetXtreme BCM5704 network device with the tg3 driver caused high system load and very bad performance. (BZ#502837) * "/proc/[pid]/maps" and "/proc/[pid]/smaps" can only be read by processes able to use the ptrace() call on a given process; however, certain information from "/proc/[pid]/stat" and "/proc/[pid]/wchan" could be used to reconstruct memory maps. (BZ#499546) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect. **Merged security bulletin from advisories:** https://lists.centos.org/pipermail/centos-announce/2009-June/065450.html https://lists.centos.org/pipermail/centos-announce/2009-June/065451.html **Affected packages:** kernel kernel-PAE kernel-PAE-devel kernel-debug kernel-debug-devel kernel-devel kernel-doc kernel-headers kernel-xen kernel-xen-devel **Upstream details at:** https://access.redhat.com/errata/RHSA-2009:1106


Affected Package


OS OS Version Package Name Package Version
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel-debug 2.6.18-128.1.14.el5
CentOS 5 kernel-debug-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-doc 2.6.18-128.1.14.el5
CentOS 5 kernel-headers 2.6.18-128.1.14.el5
CentOS 5 kernel-pae 2.6.18-128.1.14.el5
CentOS 5 kernel-pae-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-xen 2.6.18-128.1.14.el5
CentOS 5 kernel-xen-devel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel-debug 2.6.18-128.1.14.el5
CentOS 5 kernel-debug-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-doc 2.6.18-128.1.14.el5
CentOS 5 kernel-headers 2.6.18-128.1.14.el5
CentOS 5 kernel-pae 2.6.18-128.1.14.el5
CentOS 5 kernel-pae-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-xen 2.6.18-128.1.14.el5
CentOS 5 kernel-xen-devel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel-debug 2.6.18-128.1.14.el5
CentOS 5 kernel-debug-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-doc 2.6.18-128.1.14.el5
CentOS 5 kernel-headers 2.6.18-128.1.14.el5
CentOS 5 kernel-xen 2.6.18-128.1.14.el5
CentOS 5 kernel-xen-devel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5
CentOS 5 kernel-debug 2.6.18-128.1.14.el5
CentOS 5 kernel-debug-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-devel 2.6.18-128.1.14.el5
CentOS 5 kernel-doc 2.6.18-128.1.14.el5
CentOS 5 kernel-headers 2.6.18-128.1.14.el5
CentOS 5 kernel-xen 2.6.18-128.1.14.el5
CentOS 5 kernel-xen-devel 2.6.18-128.1.14.el5
CentOS 5 kernel 2.6.18-128.1.14.el5

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