==========================================================================
Ubuntu Security Notice USN-2241-1
June 05, 2014
linux vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 13.10
Summary:
Several security issues were fixed in the kernel.
Software Description:
– linux: Linux kernel
Details:
Pinkie Pie discovered a flaw in the Linux kernel’s futex subsystem. An
unprivileged local user could exploit this flaw to cause a denial of
service (system crash) or gain administrative privileges. (CVE-2014-3153)
A flaw was discovered in the Linux kernel virtual machine’s (kvm)
validation of interrupt requests (irq). A guest OS user could exploit this
flaw to cause a denial of service (host OS crash). (CVE-2014-0155)
An information leak was discovered in the netfilter subsystem of the Linux
kernel. An attacker could exploit this flaw to obtain sensitive information
from kernel memory. (CVE-2014-2568)
Sasha Levin reported a bug in the Linux kernel’s virtual memory management
subsystem. An unprivileged local user could exploit this flaw to cause a
denial of service (system crash). (CVE-2014-3122)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 13.10:
linux-image-3.11.0-23-generic 3.11.0-23.40
linux-image-3.11.0-23-generic-lpae 3.11.0-23.40
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.
References:
http://www.ubuntu.com/usn/usn-2241-1
CVE-2014-0155, CVE-2014-2568, CVE-2014-3122, CVE-2014-3153
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.11.0-23.40
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==========================================================================
Ubuntu Security Notice USN-2239-1
June 05, 2014
linux-lts-saucy vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
– linux-lts-saucy: Linux hardware enablement kernel from Saucy
Details:
Pinkie Pie discovered a flaw in the Linux kernel’s futex subsystem. An
unprivileged local user could exploit this flaw to cause a denial of
service (system crash) or gain administrative privileges. (CVE-2014-3153)
A flaw was discovered in the Linux kernel virtual machine’s (kvm)
validation of interrupt requests (irq). A guest OS user could exploit this
flaw to cause a denial of service (host OS crash). (CVE-2014-0155)
An information leak was discovered in the netfilter subsystem of the Linux
kernel. An attacker could exploit this flaw to obtain sensitive information
from kernel memory. (CVE-2014-2568)
Sasha Levin reported a bug in the Linux kernel’s virtual memory management
subsystem. An unprivileged local user could exploit this flaw to cause a
denial of service (system crash). (CVE-2014-3122)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.11.0-23-generic 3.11.0-23.40~precise1
linux-image-3.11.0-23-generic-lpae 3.11.0-23.40~precise1
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.
References:
http://www.ubuntu.com/usn/usn-2239-1
CVE-2014-0155, CVE-2014-2568, CVE-2014-3122, CVE-2014-3153
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-saucy/3.11.0-23.40~precise1
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