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Ubuntu Security Notice USN-1379-1

Ubuntu Security Notice USN-1379-1
Posted Feb 29, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1379-1 - Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's handling of IPv4 icmp packets. A remote user could exploit this to cause a denial of service. A flaw was found in the Linux Ethernet bridge's handling of IGMP (Internet Group Management Protocol) packets. An unprivileged local user could exploit this flaw to crash the system. A flaw was discovered in the Linux kernel's AppArmor security interface when invalid information was written to it. An unprivileged local user could use this to cause a denial of service on the system. Various other issues were also addressed.

tags | advisory, remote, denial of service, kernel, local, protocol
systems | linux, ubuntu
advisories | CVE-2011-1927, CVE-2011-0716, CVE-2011-3619, CVE-2011-0716, CVE-2011-1927, CVE-2011-3619
MD5 | ce143cf8b1b8cc8e8cc1bb38636b82a1

Ubuntu Security Notice USN-1379-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1379-1
February 28, 2012

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

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

- Ubuntu 10.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's
handling of IPv4 icmp packets. A remote user could exploit this to cause a
denial of service. (CVE-2011-1927)

A flaw was found in the Linux Ethernet bridge's handling of IGMP (Internet
Group Management Protocol) packets. An unprivileged local user could
exploit this flaw to crash the system. (CVE-2011-0716)

A flaw was discovered in the Linux kernel's AppArmor security interface
when invalid information was written to it. An unprivileged local user
could use this to cause a denial of service on the system. (CVE-2011-3619)

Update instructions:

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

Ubuntu 10.10:
linux-image-2.6.35-32-generic 2.6.35-32.66
linux-image-2.6.35-32-generic-pae 2.6.35-32.66
linux-image-2.6.35-32-omap 2.6.35-32.66
linux-image-2.6.35-32-powerpc 2.6.35-32.66
linux-image-2.6.35-32-powerpc-smp 2.6.35-32.66
linux-image-2.6.35-32-powerpc64-smp 2.6.35-32.66
linux-image-2.6.35-32-server 2.6.35-32.66
linux-image-2.6.35-32-versatile 2.6.35-32.66
linux-image-2.6.35-32-virtual 2.6.35-32.66

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

References:
http://www.ubuntu.com/usn/usn-1379-1
CVE-2011-0716, CVE-2011-1927, CVE-2011-3619

Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.35-32.66

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