概要

Important: kernel security and bug fix update

タイプ/重大度

Security Advisory: Important

トピック

Updated kernel packages that fix several security issues and several bugs
in the Red Hat Enterprise Linux 5 kernel are now available.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

説明

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

These new kernel packages fix the following security issues:

A flaw was found in the virtual filesystem (VFS). An unprivileged local
user could truncate directories to which they had write permission; this
could render the contents of the directory inaccessible. (CVE-2008-0001,
Important)

A flaw was found in the Xen PAL emulation on Intel 64 platforms. A guest
Hardware-assisted virtual machine (HVM) could read the arbitrary physical
memory of the host system, which could make information available to
unauthorized users. (CVE-2007-6416, Important)

A flaw was found in the way core dump files were created. If a local user
can get a root-owned process to dump a core file into a directory, which
the user has write access to, they could gain read access to that core
file, potentially containing sensitive information. (CVE-2007-6206, Moderate)

A buffer overflow flaw was found in the CIFS virtual file system. A
remote,authenticated user could issue a request that could lead to a denial
of service. (CVE-2007-5904, Moderate)

A flaw was found in the "sysfs_readdir" function. A local user could create
a race condition which would cause a denial of service (kernel oops).
(CVE-2007-3104, Moderate)

As well, these updated packages fix the following bugs:

• running the "strace -f" command caused strace to hang, without displaying
  information about child processes.
  
• unmounting an unresponsive, interruptable NFS mount, for example, one
  mounted with the "intr" option, may have caused a system crash.
  
• a bug in the s2io.ko driver prevented VLAN devices from being added.
  Attempting to add a device to a VLAN, for example, running the "vconfig
  add [device-name] [vlan-id]" command caused vconfig to fail.
  
• tux used an incorrect open flag bit. This caused problems when building
  packages in a chroot environment, such as mock, which is used by the koji
  build system.
  

Red Hat Enterprise Linux 5 users are advised to upgrade to these updated
packages, which contain backported patches to resolve these issues.

解決法

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

影響を受ける製品

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support 5.1 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support 5.1 ia64
• Red Hat Enterprise Linux Server - Extended Update Support 5.1 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 5.1 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 5.1 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

修正

• BZ - 245777 - CVE-2007-3104 Null pointer to an inode in a dentry can cause an oops in sysfs_readdir [rhel-5.1.z]
• BZ - 372701 - CVE-2007-5904 Buffer overflow in CIFS VFS
• BZ - 396861 - CVE-2007-6206 Issue with core dump owner
• BZ - 412091 - [RHEL5 U1] [ia64] Kernel test failing under limited memory
• BZ - 414041 - NFS: System crashes trying to force umount a unresponsive, interruptible mount, which holds references to silly renamed files.
• BZ - 424181 - RHEL5.1 beta: System hung during warm boot-cycling test
• BZ - 425381 - CVE-2007-6416 [RHEL 5.2] [XEN/IA64] Security: vulnerability of copy_to_user in PAL emulation
• BZ - 426289 - [REG][5.1] VLAN add operation fail on s2io.ko driver(Neterion 10GbE card driver),
• BZ - 427994 - CVE-2007-3104 Null pointer to an inode in a dentry can cause an oops in sysfs_readdir
• BZ - 428791 - CVE-2008-0001 kernel: filesystem corruption by unprivileged user via directory truncation

CVE

• CVE-2007-3104
• CVE-2008-0001
• CVE-2007-6206
• CVE-2007-5904
• CVE-2007-6416

参考資料

• http://www.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux Server 5

SRPM
x86_64
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c
ia64
kernel-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: 380c58e8752188919b5e1a159b57d95474fe7a09f0eb8102373f70f8ce46a6c5
kernel-debug-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: 044c3f3d583ce016bea3b4ee3ee3c3bd99cc6751f5d1d238cd4028201c427175
kernel-debug-devel-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: 805ebb6e159ecc4083687eb46ad2593c24ac011edf6a2d4f64979120f0987d31
kernel-devel-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: a2b028fb47baeb817f27127523cb76a4b8160ad38b692a2599e10d03d39f8d95
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c
kernel-headers-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: 0d53a01416ee31400de1cee17cec2c77c9faba8c7d0d1f1bf5e1a452809d6973
kernel-xen-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: 3c3e5f98c030c6e3d5048abe3b417e23ad146b77ad9608dba8c64bcd4aa4bfbd
kernel-xen-devel-2.6.18-53.1.6.el5.ia64.rpm	SHA-256: 308d842133ca4eb794a42cc772ca70563828a98fbe8e15968fdc00ef22cd2ab6
i386
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c

Red Hat Enterprise Linux Workstation 5

SRPM
x86_64
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c
i386
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c

Red Hat Enterprise Linux Desktop 5

SRPM
x86_64
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c
i386
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
s390x
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c

Red Hat Enterprise Linux for Power, big endian 5

SRPM
ppc
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c

Red Hat Enterprise Linux Server from RHUI 5

SRPM
x86_64
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c
i386
kernel-doc-2.6.18-53.1.6.el5.noarch.rpm	SHA-256: 9aafea10082a25072153b50a923b2955b3d50f6eaaea1146e7261781eb18200c