ubuntu-security-announce Digest, Vol 93, Issue 6

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Today's Topics:

1. [USN-1468-1] Linux kernel vulnerability (John Johansen)
2. [USN-1469-1] Linux kernel (EC2) vulnerability (John Johansen)
3. [USN-1470-1] Linux kernel (Natty backport) vulnerabilities
(John Johansen)
4. [USN-1471-1] Linux kernel (Oneiric backport) vulnerabilities
(John Johansen)
5. [USN-1472-1] Linux kernel vulnerabilities (John Johansen)


----------------------------------------------------------------------

Message: 1
Date: Tue, 12 Jun 2012 12:41:40 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1468-1] Linux kernel vulnerability
Message-ID: <4FD79B74.7080301@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1468-1
June 12, 2012

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

The system could be made to crash or run programs as an administrator.

Software Description:
- linux: Linux kernel

Details:

Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit this
flaw to cause a denial of service and potentially gain higher privileges.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
linux-image-2.6.32-41-386 2.6.32-41.90
linux-image-2.6.32-41-generic 2.6.32-41.90
linux-image-2.6.32-41-generic-pae 2.6.32-41.90
linux-image-2.6.32-41-ia64 2.6.32-41.90
linux-image-2.6.32-41-lpia 2.6.32-41.90
linux-image-2.6.32-41-powerpc 2.6.32-41.90
linux-image-2.6.32-41-powerpc-smp 2.6.32-41.90
linux-image-2.6.32-41-powerpc64-smp 2.6.32-41.90
linux-image-2.6.32-41-preempt 2.6.32-41.90
linux-image-2.6.32-41-server 2.6.32-41.90
linux-image-2.6.32-41-sparc64 2.6.32-41.90
linux-image-2.6.32-41-sparc64-smp 2.6.32-41.90
linux-image-2.6.32-41-versatile 2.6.32-41.90
linux-image-2.6.32-41-virtual 2.6.32-41.90

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1468-1
CVE-2012-2133

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-41.90

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Message: 2
Date: Tue, 12 Jun 2012 14:03:28 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1469-1] Linux kernel (EC2) vulnerability
Message-ID: <4FD7AEA0.7000503@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1469-1
June 12, 2012

linux-ec2 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

The system could be made to crash or run programs as an administrator.

Software Description:
- linux-ec2: Linux kernel for EC2

Details:

Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit this
flaw to cause a denial of service and potentially gain higher privileges.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
linux-image-2.6.32-345-ec2 2.6.32-345.49

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1469-1
CVE-2012-2133

Package Information:
https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-345.49

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Message: 3
Date: Tue, 12 Jun 2012 14:16:25 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1470-1] Linux kernel (Natty backport) vulnerabilities
Message-ID: <4FD7B1A9.8090302@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1470-1
June 12, 2012

linux-lts-backport-natty vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-lts-backport-natty: Linux kernel backport from Natty

Details:

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation.
A remote NFS server (attacker) could exploit this flaw to cause a denial of
service. (CVE-2011-4131)

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual
cpu setup. An unprivileged local user could exploit this flaw to crash the
system leading to a denial of service. (CVE-2012-1601)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
An administrative user in the guest OS could leverage this flaw to cause a
denial of service in the host OS. (CVE-2012-2121)

Steve Grubb reported a flaw with Linux fscaps (file system base
capabilities) when used to increase the permissions of a process. For
application on which fscaps are in use a local attacker can disable address
space randomization to make attacking the process with raised privileges
easier. (CVE-2012-2123)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit this
flaw to cause a denial of service and potentially gain higher privileges.
(CVE-2012-2133)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
linux-image-2.6.38-15-generic 2.6.38-15.60~lucid1
linux-image-2.6.38-15-generic-pae 2.6.38-15.60~lucid1
linux-image-2.6.38-15-server 2.6.38-15.60~lucid1
linux-image-2.6.38-15-virtual 2.6.38-15.60~lucid1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1470-1
CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123,
CVE-2012-2133

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-natty/2.6.38-15.60~lucid1

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Message: 4
Date: Tue, 12 Jun 2012 14:44:04 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1471-1] Linux kernel (Oneiric backport) vulnerabilities
Message-ID: <4FD7B824.8020102@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1471-1
June 12, 2012

linux-lts-backport-oneiric vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux-lts-backport-oneiric: Linux kernel backport from Oneiric

Details:

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation.
A remote NFS server (attacker) could exploit this flaw to cause a denial of
service. (CVE-2011-4131)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
An administrative user in the guest OS could leverage this flaw to cause a
denial of service in the host OS. (CVE-2012-2121)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit this
flaw to cause a denial of service and potentially gain higher privileges.
(CVE-2012-2133)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's
handling of ioctls. An unprivileged local user could leverage this flaw to
cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel's hfsplus
filesystem. An unprivileged local user could exploit these flaws to gain
root system priviliges. (CVE-2012-2319)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of cliprect on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain
root privileges. (CVE-2012-2383)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of buffer_count on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain
root privileges. (CVE-2012-2384)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 10.04 LTS:
linux-image-3.0.0-21-generic 3.0.0-21.35~lucid1
linux-image-3.0.0-21-generic-pae 3.0.0-21.35~lucid1
linux-image-3.0.0-21-server 3.0.0-21.35~lucid1
linux-image-3.0.0-21-virtual 3.0.0-21.35~lucid1

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-1471-1
CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313,
CVE-2012-2319, CVE-2012-2383, CVE-2012-2384

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-21.35~lucid1

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Message: 5
Date: Tue, 12 Jun 2012 15:09:25 -0700
From: John Johansen <john.johansen@canonical.com>
To: ubuntu-security-announce@lists.ubuntu.com
Subject: [USN-1472-1] Linux kernel vulnerabilities
Message-ID: <4FD7BE15.2050503@canonical.com>
Content-Type: text/plain; charset="iso-8859-1"

==========================================================================
Ubuntu Security Notice USN-1472-1
June 12, 2012

linux vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 11.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation.
A remote NFS server (attacker) could exploit this flaw to cause a denial of
service. (CVE-2011-4131)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
An administrative user in the guest OS could leverage this flaw to cause a
denial of service in the host OS. (CVE-2012-2121)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit this
flaw to cause a denial of service and potentially gain higher privileges.
(CVE-2012-2133)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's
handling of ioctls. An unprivileged local user could leverage this flaw to
cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel's hfsplus
filesystem. An unprivileged local user could exploit these flaws to gain
root system priviliges. (CVE-2012-2319)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of cliprect on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain
root privileges. (CVE-2012-2383)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of buffer_count on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain
root privileges. (CVE-2012-2384)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 11.10:
linux-image-3.0.0-21-generic 3.0.0-21.35
linux-image-3.0.0-21-generic-pae 3.0.0-21.35
linux-image-3.0.0-21-omap 3.0.0-21.35
linux-image-3.0.0-21-powerpc 3.0.0-21.35
linux-image-3.0.0-21-powerpc-smp 3.0.0-21.35
linux-image-3.0.0-21-powerpc64-smp 3.0.0-21.35
linux-image-3.0.0-21-server 3.0.0-21.35
linux-image-3.0.0-21-virtual 3.0.0-21.35

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-1472-1
CVE-2011-4131, CVE-2012-2121, CVE-2012-2133, CVE-2012-2313,
CVE-2012-2319, CVE-2012-2383, CVE-2012-2384

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.0.0-21.35

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