Scientific Linux: Important Kernel Update for CVE-2011-1182 & Others

Date: Wed, 24 Aug 2011 16:33:53 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Important: kernel on SL6.x i386/x86_64
Comments: To: "This email address is being protected from spambots. You need JavaScript enabled to view it."
 
MIME-Version: 1.0

Synopsis: Important: kernel security, bug fix, and enhancement update
Issue Date: 2011-08-23
CVE Numbers: CVE-2011-1182
 CVE-2011-1576
 CVE-2011-1593
 CVE-2011-2492
 CVE-2011-1776
 CVE-2011-2491
 CVE-2011-2183
 CVE-2011-2213
 CVE-2011-1898
 CVE-2011-2497
 CVE-2011-2495
 CVE-2011-2517
 CVE-2011-2689
 CVE-2011-2695

Security issues:

* Using PCI passthrough without interrupt remapping support allowed KVM
guests to generate MSI interrupts and thus potentially inject traps. A
privileged guest user could use this flaw to crash the host or possibly
escalate their privileges on the host. The fix for this issue can
prevent PCI passthrough working and guests starting. (CVE-2011-1898,
Important)

* Flaw in the client-side NLM implementation could allow a local,
unprivileged user to cause a denial of service. (CVE-2011-2491, Important)

* Integer underflow in the Bluetooth implementation could allow a remote
attacker to cause a denial of service or escalate their privileges by
sending a specially-crafted request to a target system via Bluetooth.
(CVE-2011-2497, Important)

* Buffer overflows in the netlink-based wireless configuration interface
implementation could allow a local user, who has the CAP_NET_ADMIN
capability, to cause a denial of service or escalate their privileges on
systems that have an active wireless interface. (CVE-2011-2517, Important)

* Flaw in the way the maximum file offset was handled for ext4 file
systems could allow a local, unprivileged user to cause a denial of
service. (CVE-2011-2695, Important)

* Flaw allowed napi_reuse_skb() to be called on VLAN packets. An
attacker on the local network could use this flaw to send crafted
packets to a target, possibly causing a denial of service.
(CVE-2011-1576, Moderate)

* Integer signedness error in next_pidmap() could allow a local,
unprivileged user to cause a denial of service. (CVE-2011-1593, Moderate)

* Race condition in the memory merging support (KSM) could allow a
local, unprivileged user to cause a denial of service. KSM is off by
default, but on systems running VDSM, or on KVM hosts, it is likely
turned on by the ksm/ksmtuned services. (CVE-2011-2183, Moderate)

* Flaw in inet_diag_bc_audit() could allow a local, unprivileged user to
cause a denial of service. (CVE-2011-2213, Moderate)

* Flaw in the way space was allocated in the Global File System 2 (GFS2)
implementation. If the file system was almost full, and a local,
unprivileged user made an fallocate() request, it could result in a
denial of service. Setting quotas to prevent users from using all
available disk space would prevent exploitation of this flaw.
(CVE-2011-2689, Moderate)

* Local, unprivileged users could send signals via the sigqueueinfo
system call, with si_code set to SI_TKILL and with spoofed process and
user IDs, to other processes. This flaw does not allow existing
permission checks to be bypassed; signals can only be sent if your
privileges allow you to already do so. (CVE-2011-1182, Low)

* Heap overflow in the EFI GUID Partition Table (GPT) implementation
could allow a local attacker to cause a denial of service by mounting a
disk containing crafted partition tables. (CVE-2011-1776, Low)

* Structure padding in two structures in the Bluetooth implementation
was not initialized properly before being copied to user-space, possibly
allowing local, unprivileged users to leak kernel stack memory to
user-space. (CVE-2011-2492, Low)

* /proc/[PID]/io is world-readable by default. Previously, these files
could be read without any further restrictions. A local, unprivileged
user could read these files, belonging to other, possibly privileged
processes to gather confidential information, such as the length of a
password used in a process. (CVE-2011-2495, Low)

SL6:
 i386
 kernel-2.6.32-131.12.1.el6.i686.rpm
 kernel-devel-2.6.32-131.12.1.el6.i686.rpm
 kernel-debug-devel-2.6.32-131.12.1.el6.i686.rpm
 kernel-debug-2.6.32-131.12.1.el6.i686.rpm
 kernel-headers-2.6.32-131.12.1.el6.i686.rpm
 perf-2.6.32-131.12.1.el6.i686.rpm
 noarch
 kernel-firmware-2.6.32-131.12.1.el6.noarch.rpm
 kernel-doc-2.6.32-131.12.1.el6.noarch.rpm
 x86_64
 kernel-2.6.32-131.12.1.el6.x86_64.rpm
 kernel-devel-2.6.32-131.12.1.el6.x86_64.rpm
 kernel-debug-devel-2.6.32-131.12.1.el6.x86_64.rpm
 kernel-debug-2.6.32-131.12.1.el6.x86_64.rpm
 kernel-headers-2.6.32-131.12.1.el6.x86_64.rpm
 perf-2.6.32-131.12.1.el6.x86_64.rpm

- Scientific Linux Development Team