Synopsis: Important: kernel security and bug fix update
Issue Date: 2011-01-18
CVE Numbers: CVE-2010-4242
CVE-2010-3859
CVE-2010-4083
CVE-2010-3876
CVE-2010-4157
CVE-2010-4072
CVE-2010-4073
CVE-2010-4075
CVE-2010-4080
CVE-2010-4158
CVE-2010-4249
—
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issues:
* A heap overflow flaw was found in the Linux kernel’s Transparent
Inter-Process Communication protocol (TIPC) implementation. A local,
unprivileged user could use this flaw to escalate their privileges.
(CVE-2010-3859, Important)
* Missing sanity checks were found in gdth_ioctl_alloc() in the gdth driver
in the Linux kernel. A local user with access to “/dev/gdth” on a 64-bit
system could use these flaws to cause a denial of service or escalate their
privileges. (CVE-2010-4157, Moderate)
* A NULL pointer dereference flaw was found in the Bluetooth HCI UART
driver in the Linux kernel. A local, unprivileged user could use this flaw
to cause a denial of service. (CVE-2010-4242, Moderate)
* A flaw was found in the Linux kernel’s garbage collector for AF_UNIX
sockets. A local, unprivileged user could use this flaw to trigger a
denial of service (out-of-memory condition). (CVE-2010-4249, Moderate)
* Missing initialization flaws were found in the Linux kernel. A local,
unprivileged user could use these flaws to cause information leaks.
(CVE-2010-3876, CVE-2010-4072, CVE-2010-4073, CVE-2010-4075, CVE-2010-4080,
CVE-2010-4083, CVE-2010-4158, Low)
Red Hat would like to thank Alan Cox for reporting CVE-2010-4242; Vegard
Nossum for reporting CVE-2010-4249; Vasiliy Kulikov for reporting
CVE-2010-3876; Kees Cook for reporting CVE-2010-4072; and Dan Rosenberg for
reporting CVE-2010-4073, CVE-2010-4075, CVE-2010-4080, CVE-2010-4083, and
CVE-2010-4158.
This update also fixes the following bugs:
* A flaw was found in the Linux kernel where, if used in conjunction with
another flaw that can result in a kernel Oops, could possibly lead to
privilege escalation. It does not affect Red Hat Enterprise Linux 4 as the
sysctl panic_on_oops variable is turned on by default. However, as a
preventive measure if the variable is turned off by an administrator, this
update addresses the issue. Red Hat would like to thank Nelson Elhage for
reporting this vulnerability. (BZ#659568)
* On Intel I/O Controller Hub 9 (ICH9) hardware, jumbo frame support is
achieved by using page-based sk_buff buffers without any packet split. The
entire frame data is copied to the page(s) rather than some to the
skb->data area and some to the page(s) when performing a typical
packet-split. This caused problems with the filtering code and frames were
getting dropped before they were received by listening applications. This
bug could eventually lead to the IP address being released and not being
able to be re-acquired from DHCP if the MTU (Maximum Transfer Unit) was
changed (for an affected interface using the e1000e driver). With this
update, frames are no longer dropped and an IP address is correctly
re-acquired after a previous release. (BZ#664667)
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.
—
SL4
x86_64
kernel-2.6.9-89.35.1.EL.x86_64.rpm
kernel-devel-2.6.9-89.35.1.EL.x86_64.rpm
kernel-largesmp-2.6.9-89.35.1.EL.x86_64.rpm
kernel-largesmp-devel-2.6.9-89.35.1.EL.x86_64.rpm
kernel-smp-2.6.9-89.35.1.EL.x86_64.rpm
kernel-smp-devel-2.6.9-89.35.1.EL.x86_64.rpm
kernel-xenU-2.6.9-89.35.1.EL.x86_64.rpm
kernel-xenU-devel-2.6.9-89.35.1.EL.x86_64.rpm
i386
kernel-2.6.9-89.35.1.EL.i686.rpm
kernel-devel-2.6.9-89.35.1.EL.i686.rpm
kernel-hugemem-2.6.9-89.35.1.EL.i686.rpm
kernel-hugemem-devel-2.6.9-89.35.1.EL.i686.rpm
kernel-smp-2.6.9-89.35.1.EL.i686.rpm
kernel-smp-devel-2.6.9-89.35.1.EL.i686.rpm
kernel-xenU-2.6.9-89.35.1.EL.i686.rpm
kernel-xenU-devel-2.6.9-89.35.1.EL.i686.rpm
noarch
kernel-doc-2.6.9-89.35.1.EL.noarch.rpm
– Scientific Linux Development Team
