Synopsis: Important: kernel security and bug fix update
Issue Date: 2012-07-10
CVE Numbers: CVE-2012-2744
CVE-2012-2745
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issues:
* A NULL pointer dereference flaw was found in the nf_ct_frag6_reasm()
function in the Linux kernel's netfilter IPv6 connection tracking
implementation. A remote attacker could use this flaw to send
specially-crafted packets to a target system that is using IPv6 and also
has the nf_conntrack_ipv6 kernel module loaded, causing it to crash.
(CVE-2012-2744, Important)
* A flaw was found in the way the Linux kernel's key management facility
handled replacement session keyrings on process forks. A local,
unprivileged user could use this flaw to cause a denial of service.
(CVE-2012-2745, Moderate)
This update also fixes the following bugs:
* Previously introduced firmware files required for new Realtek chipsets
contained an invalid prefix ("rtl_nic_") in the file names, for example
"/lib/firmware/rtl_nic/rtl_nic_rtl8168d-1.fw". This update corrects these
file names. For example, the aforementioned file is now correctly named
"/lib/firmware/rtl_nic/rtl8168d-1.fw".
* This update blacklists the ADMA428M revision of the 2GB ATA Flash Disk
device. This is due to data corruption occurring on the said device when
the Ultra-DMA 66 transfer mode is used. When the
"libata.force=5:pio0,6:pio0" kernel parameter is set, the aforementioned
device works as expected.
* On Scientific Linux 6, mounting an NFS export from a server
running Windows Server 2012 Release Candidate returned the
NFS4ERR_MINOR_VERS_MISMATCH error because Windows Server 2012 Release
Candidate supports NFSv4.1 only. Scientific Linux 6 did not
properly handle the returned error and did not fall back to using NFSv3,
which caused the mount operation to fail. With this update, when the
NFS4ERR_MINOR_VERS_MISMATCH error is returned, the mount operation properly
falls back to using NFSv3 and no longer fails.
* On ext4 file systems, when fallocate() failed to allocate blocks due to
the ENOSPC condition (no space left on device) for a file larger than 4 GB,
the size of the file became corrupted and, consequently, caused file system
corruption. This was due to a missing cast operator in the
"ext4_fallocate()" function. With this update, the underlying source code
has been modified to address this issue, and file system corruption no
longer occurs.
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.
SL6:
i386
kernel-2.6.32-279.1.1.el6.i686.rpm
kernel-debug-2.6.32-279.1.1.el6.i686.rpm
kernel-debug-debuginfo-2.6.32-279.1.1.el6.i686.rpm
kernel-debug-devel-2.6.32-279.1.1.el6.i686.rpm
kernel-debuginfo-2.6.32-279.1.1.el6.i686.rpm
kernel-debuginfo-common-i686-2.6.32-279.1.1.el6.i686.rpm
kernel-devel-2.6.32-279.1.1.el6.i686.rpm
kernel-headers-2.6.32-279.1.1.el6.i686.rpm
perf-2.6.32-279.1.1.el6.i686.rpm
perf-debuginfo-2.6.32-279.1.1.el6.i686.rpm
python-perf-2.6.32-279.1.1.el6.i686.rpm
python-perf-debuginfo-2.6.32-279.1.1.el6.i686.rpm
noarch
kernel-doc-2.6.32-279.1.1.el6.noarch.rpm
kernel-firmware-2.6.32-279.1.1.el6.noarch.rpm
x86_64
kernel-2.6.32-279.1.1.el6.x86_64.rpm
kernel-debug-2.6.32-279.1.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-279.1.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-279.1.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-279.1.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-279.1.1.el6.x86_64.rpm
kernel-devel-2.6.32-279.1.1.el6.x86_64.rpm
kernel-headers-2.6.32-279.1.1.el6.x86_64.rpm
perf-2.6.32-279.1.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-279.1.1.el6.x86_64.rpm
python-perf-2.6.32-279.1.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-279.1.1.el6.x86_64.rpm
- Scientific Linux Development Team
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