Advisory Published

USN-1220-1: Linux kernel (OMAP4) vulnerabilities

First published: Thu Sep 29 2011(Updated: )

Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1576) Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. (CVE-2011-1776) Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service. (CVE-2011-2213) Dan Rosenberg discovered that the Bluetooth stack incorrectly handled certain L2CAP requests. If a system was using Bluetooth, a remote attacker could send specially crafted traffic to crash the system or gain root privileges. (CVE-2011-2497) Mauro Carvalho Chehab discovered that the si4713 radio driver did not correctly check the length of memory copies. If this hardware was available, a local attacker could exploit this to crash the system or gain root privileges. (CVE-2011-2700) Herbert Xu discovered that certain fields were incorrectly handled when Generic Receive Offload (CVE-2011-2723) Time Warns discovered that long symlinks were incorrectly handled on Be filesystems. A local attacker could exploit this with a malformed Be filesystem and crash the system, leading to a denial of service. (CVE-2011-2928) Dan Kaminsky discovered that the kernel incorrectly handled random sequence number generation. An attacker could use this flaw to possibly predict sequence numbers and inject packets. (CVE-2011-3188) Darren Lavender discovered that the CIFS client incorrectly handled certain large values. A remote attacker with a malicious server could exploit this to crash the system or possibly execute arbitrary code as the root user. (CVE-2011-3191) Gideon Naim discovered a flaw in the Linux kernel's handling VLAN 0 frames. An attacker on the local network could exploit this flaw to cause a denial of service. (CVE-2011-3593)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-2.6.35-903-omap4<2.6.35-903.25
2.6.35-903.25
Ubuntu gir1.2-packagekitglib-1.0=10.10

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of USN-1220-1?

    The severity of USN-1220-1 is classified as a denial of service vulnerability that could be exploited by remote attackers.

  • How do I fix USN-1220-1?

    To fix USN-1220-1, update the kernel to version 2.6.35-903.26 or later.

  • What systems are affected by USN-1220-1?

    USN-1220-1 affects Ubuntu 10.10 systems running the linux-image-2.6.35-903-omap4 package.

  • What type of vulnerability is USN-1220-1?

    USN-1220-1 is a denial of service vulnerability that can crash the system through improperly handled VLAN packets.

  • Who discovered the vulnerability in USN-1220-1?

    The vulnerability in USN-1220-1 was discovered by Ryan Sweat and Timo Warns.

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