These updated packages fix the following security issues :

  - the exit_notify() function in the Linux kernel did not     properly reset the exit signal if a process executed a     set user ID (setuid) application before exiting. This     could allow a local, unprivileged user to elevate their     privileges. (CVE-2009-1337, Important)

  - the Linux kernel implementation of the Network File     System (NFS) did not properly initialize the file name     limit in the nfs_server data structure. This flaw could     possibly lead to a denial of service on a client     mounting an NFS share. (CVE-2009-1336, Moderate)

  - a flaw was found in the Intel PRO/1000 network driver in     the Linux kernel. Frames with sizes near the MTU of an     interface may be split across multiple hardware receive     descriptors. Receipt of such a frame could leak through     a validation check, leading to a corruption of the     length check. A remote attacker could use this flaw to     send a specially crafted packet that would cause a     denial of service. (CVE-2009-1385, 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)

These updated packages also fix the following bugs :

  - '/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, making it possible to bypass     the Address Space Layout Randomization (ASLR) security     feature. This update addresses this issue. (BZ#499549)

  - in some situations, the link count was not decreased     when renaming unused files on NFS mounted file systems.
    This may have resulted in poor performance. With this     update, the link count is decreased in these situations,     the same as is done for other file operations, such as     unlink and rmdir. (BZ#501802)

  - tcp_ack() cleared the probes_out variable even if there     were outstanding packets. When low TCP keepalive     intervals were used, this bug may have caused problems,     such as connections terminating, when using remote tools     such as rsh and rlogin. (BZ#501754)

  - off-by-one errors in the time normalization code could     have caused clock_gettime() to return one billion     nanoseconds, rather than adding an extra second. This     bug could have caused the name service cache daemon     (nscd) to consume excessive CPU resources. (BZ#501800)

  - a system panic could occur when one thread read     '/proc/bus/input/devices' while another was removing a     device. With this update, a mutex has been added to     protect the input_dev_list and input_handler_list     variables, which resolves this issue. (BZ#501804)

  - using netdump may have caused a kernel deadlock on some     systems. (BZ#504565)

  - the file system mask, which lists capabilities for users     with a file system user ID (fsuid) of 0, was missing the     CAP_MKNOD and CAP_LINUX_IMMUTABLE capabilities. This     could, potentially, allow users with an fsuid other than     0 to perform actions on some file system types that     would otherwise be prevented. This update adds these     capabilities. (BZ#497269)

Kernel Feature Support :

  - added a new allowable value to     '/proc/sys/kernel/wake_balance' to allow the scheduler     to run the thread on any available CPU rather than     scheduling it on the optimal CPU.

  - added 'max_writeback_pages' tunable parameter to     /proc/sys/vm/ to allow the maximum number of modified     pages kupdate writes to disk, per iteration per run.

  - added 'swap_token_timeout' tunable parameter to     /proc/sys/vm/ to provide a valid hold time for the swap     out protection token.

  - added diskdump support to sata_svw driver.

  - limited physical memory to 64GB for 32-bit kernels     running on systems with more than 64GB of physical     memory to prevent boot failures.

  - improved reliability of autofs.

  - added support for 'rdattr_error' in NFSv4 readdir     requests.

  - fixed various short packet handling issues for NFSv4     readdir and sunrpc.

  - fixed several CIFS bugs.

Networking and IPv6 Enablement :

  - added router solicitation support.

  - enforced sg requires tx csum in ethtool.

Platform Support :

x86, AMD64, Intel 64

  - added support for a new Intel chipset.

  - added initialization vendor info in boot_cpu_data.

  - added support for N_Port ID Virtualization (NPIV) for     IBM System z guests using zFCP.

  - added HDMI support for some AMD and ATI chipsets.

  - updated HDA driver in ALSA to latest upstream as of     2008-07-22.

  - added support for affected_cpus for cpufreq.

  - removed polling timer from i8042.

  - fixed PM-Timer when using the ASUS A8V Deluxe     motherboard.

  - backported usbfs_mutex in usbfs.

Network Driver Updates :

  - updated forcedeth driver to latest upstream version     0.61.

  - fixed various e1000 issues when using Intel ESB2     hardware.

  - updated e1000e driver to upstream version 0.3.3.3-k6.

  - updated igb to upstream version 1.2.45-k2.

  - updated tg3 to upstream version 3.96.

  - updated ixgbe to upstream version 1.3.18-k4.

  - updated bnx2 to upstream version 1.7.9.

  - updated bnx2x to upstream version 1.45.23.

  - fixed bugs and added enhancements for the NetXen NX2031     and NX3031 products.

  - updated Realtek r8169 driver to support newer network     chipsets. All variants of RTL810x/RTL8168(9) are now     supported.

Storage Driver Updates :

  - fixed various SCSI issues. Also, the SCSI sd driver now     calls the revalidate_disk wrapper.

  - fixed a dmraid reduced I/O delay bug in certain     configurations.

  - removed quirk aac_quirk_scsi_32 for some aacraid     controllers.

  - updated FCP driver on IBM System z systems with support     for point-to-point connections.

  - updated lpfc to version 8.0.16.46.

  - updated megaraid_sas to version 4.01-RH1.

  - updated MPT Fusion driver to version 3.12.29.00rh.

  - updated qla2xxx firmware to 4.06.01 for 4GB/s and 8GB/s     adapters.

  - updated qla2xxx driver to version 8.02.09.00.04.08-d.

  - fixed sata_nv in libsata to disable ADMA mode by     default.

Miscellaneous Updates :

  - upgraded OpenFabrics Alliance Enterprise Distribution     (OFED) to version 1.4.

  - added driver support and fixes for various Wacom     tablets.

Note: The system must be rebooted for this update to take effect.

Several vulnerabilities have been discovered in the Linux kernel that may lead to denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2009-1385     Neil Horman discovered a missing fix from the e1000     network driver. A remote user may cause a denial of     service by way of a kernel panic triggered by specially     crafted frame sizes.

  - CVE-2009-1389     Michael Tokarev discovered an issue in the r8169 network     driver. Remote users on the same LAN may cause a denial     of service by way of a kernel panic triggered by     receiving a large size frame.

  - CVE-2009-1630     Frank Filz discovered that local users may be able to     execute files without execute permission when accessed     via an nfs4 mount.

  - CVE-2009-1633     Jeff Layton and Suresh Jayaraman fixed several buffer     overflows in the CIFS filesystem which allow remote     servers to cause memory corruption.

  - CVE-2009-2692     Tavis Ormandy and Julien Tinnes discovered an issue with     how the sendpage function is initialized in the     proto_ops structure. Local users can exploit this     vulnerability to gain elevated privileges.

The remote CentOS system is missing a security update which has been documented in Red Hat advisory RHSA-2009-1106.

ID	名稱	產品	系列	已發布	已更新	嚴重性
60609	Scientific Linux Security Update : kernel on SL4.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	high
44730	Debian DSA-1865-1 : linux-2.6 - denial of service/privilege escalation	Nessus	Debian Local Security Checks	2010/2/24	2021/1/4	high
801470	CentOS RHSA-2009-1106 Security Check	Log Correlation Engine	Generic			high

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