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Ubuntu 11.04: USN-1577-1 Moderate: Kernel OMAP4 Denial Of Service

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Calendar Grey September 21, 2012
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Multiple vulnerabilities in the Linux kernel have been resolved in Ubuntu Security Notice USN-1577-1, highlighting critical denial of service risks.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-ti-omap4: Linux kernel for OMAP4

Details:

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)

Ben Hutchings reported a flaw in the Linux kernel with some network drivers

that support TSO (TCP segment offload). A local or peer user could exploit

this flaw to to cause a denial of service. (CVE-2012-3412)

Jay Fenlason and Doug Ledford discovered a bug in the Linux kernel

implementation of RDS sockets. A local unprivileged user could potentially

use this flaw to read privileged information from the kernel.

(CVE-2012-3430)

A flaw was discovered in the madvise feature of the Linux kernel's memory

subsystem. An unprivileged local use could exploit the flaw to cause a

denial of service (crash the system). (CVE-2012-3511)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel patch instructions OMAP4

Update Instructions

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

Ubuntu 11.04:
  linux-image-2.6.38-1209-omap4   2.6.38-1209.26

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

References

https://ubuntu.com/security/notices/USN-1577-1

CVE-2012-2121, CVE-2012-3412, CVE-2012-3430, CVE-2012-3511

September 21, 2012

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel patch instructions OMAP4

Package Information

https://launchpad.net/ubuntu/+source/linux-ti-omap4/2.6.38-1209.26

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