Home / mailings

PDF

[USN-2332-1] Linux kernel vulnerabilities

Posted on 02 September 2014
Ubuntu Security

==========================
==========================
========================
Ubuntu Security Notice USN-2332-1
September 02, 2014

linux 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: Linux kernel

Details:

A bug was discovered in the handling of pathname components when used wit=
h
an autofs direct mount. A local user could exploit this flaw to cause a
denial of service (system crash) via an open system call. (CVE-2014-0203)=


Toralf F=C3=B6rster reported an error in the Linux kernels syscall auditi=
ng on
32 bit x86 platforms. A local user could exploit this flaw to cause a
denial of service (OOPS and system crash). (CVE-2014-4508)

An information leak was discovered in the control implemenation of the
Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. A=

local user could exploit this flaw to obtain sensitive information from
kernel memory. (CVE-2014-4652)

A use-after-free flaw was discovered in the Advanced Linux Sound
Architecture (ALSA) control implementation of the Linux kernel. A local
user could exploit this flaw to cause a denial of service (system crash).=

(CVE-2014-4653)

A authorization bug was discovered with the snd_ctl_elem_add function of
the Advanced Linux Sound Architecture (ALSA) in the Linux kernel. A local=

user could exploit his bug to cause a denial of service (remove kernel
controls). (CVE-2014-4654)

A flaw discovered in how the snd_ctl_elem function of the Advanced Linux
Sound Architecture (ALSA) handled a reference count. A local user could
exploit this flaw to cause a denial of service (integer overflow and limi=
t
bypass). (CVE-2014-4655)

An integer overflow flaw was discovered in the control implementation of
the Advanced Linux Sound Architecture (ALSA). A local user could exploit
this flaw to cause a denial of service (system crash). (CVE-2014-4656)

An integer underflow flaw was discovered in the Linux kernel's handling o=
f
the backlog value for certain SCTP packets. A remote attacker could explo=
it
this flaw to cause a denial of service (socket outage) via a crafted SCTP=

packet. (CVE-2014-4667)

Jason Gunthorpe reported a flaw with SCTP authentication in the Linux
kernel. A remote attacker could exploit this flaw to cause a denial of
service (NULL pointer dereference and OOPS). (CVE-2014-5077)

Update instructions:

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

Ubuntu 10.04 LTS:
linux-image-2.6.32-65-386 2.6.32-65.131
linux-image-2.6.32-65-generic 2.6.32-65.131
linux-image-2.6.32-65-generic-pae 2.6.32-65.131
linux-image-2.6.32-65-ia64 2.6.32-65.131
linux-image-2.6.32-65-lpia 2.6.32-65.131
linux-image-2.6.32-65-powerpc 2.6.32-65.131
linux-image-2.6.32-65-powerpc-smp 2.6.32-65.131
linux-image-2.6.32-65-powerpc64-smp 2.6.32-65.131
linux-image-2.6.32-65-preempt 2.6.32-65.131
linux-image-2.6.32-65-server 2.6.32-65.131
linux-image-2.6.32-65-sparc64 2.6.32-65.131
linux-image-2.6.32-65-sparc64-smp 2.6.32-65.131
linux-image-2.6.32-65-versatile 2.6.32-65.131
linux-image-2.6.32-65-virtual 2.6.32-65.131

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 automaticall=
y
perform this as well.

References:
http://www.ubuntu.com/usn/usn-2332-1
CVE-2014-0203, CVE-2014-4508, CVE-2014-4652, CVE-2014-4653,
CVE-2014-4654, CVE-2014-4655, CVE-2014-4656, CVE-2014-4667,
CVE-2014-5077

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.32-65.131

 

TOP