USN-974-1: Linux kernel vulnerabilities

19 August 2010

linux, linux-{ec2,fsl-imx51,mvl-dove,source-2.6.15,ti-omap} vulnerabilities

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

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

The Linux kernel could be made to crash or run programs as root.

Software Description

  • linux - The Linux kernel
  • linux-ec2 - The Linux kernel for EC2
  • linux-fsl-imx51 - The Linux kernel for I.MX51-based systems
  • linux-mvl-dove - The Linux kernel for Marvell Dove
  • linux-ti-omap - The Linux kernel for OMAP3-based systems
  • linux-source-2.6.15 - The Linux kernel

Details

Gael Delalleu, Rafal Wojtczuk, and Brad Spengler discovered that the memory manager did not properly handle when applications grow stacks into adjacent memory regions. A local attacker could exploit this to gain control of certain applications, potentially leading to privilege escalation, as demonstrated in attacks against the X server. (CVE-2010-2240)

Kees Cook discovered that under certain situations the ioctl subsystem for DRM did not properly sanitize its arguments. A local attacker could exploit this to read previously freed kernel memory, leading to a loss of privacy. (CVE-2010-2803)

Ben Hawkes discovered an integer overflow in the Controller Area Network (CAN) subsystem when setting up frame content and filtering certain messages. An attacker could send specially crafted CAN traffic to crash the system or gain root privileges. (CVE-2010-2959)

Update instructions

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

Ubuntu 10.04 LTS
linux-image-2.6.31-608-imx51 - 2.6.31-608.19
linux-image-2.6.32-208-dove - 2.6.32-208.24
linux-image-2.6.32-24-386 - 2.6.32-24.41
linux-image-2.6.32-24-generic - 2.6.32-24.41
linux-image-2.6.32-24-generic-pae - 2.6.32-24.41
linux-image-2.6.32-24-ia64 - 2.6.32-24.41
linux-image-2.6.32-24-lpia - 2.6.32-24.41
linux-image-2.6.32-24-powerpc - 2.6.32-24.41
linux-image-2.6.32-24-powerpc-smp - 2.6.32-24.41
linux-image-2.6.32-24-powerpc64-smp - 2.6.32-24.41
linux-image-2.6.32-24-preempt - 2.6.32-24.41
linux-image-2.6.32-24-server - 2.6.32-24.41
linux-image-2.6.32-24-sparc64 - 2.6.32-24.41
linux-image-2.6.32-24-sparc64-smp - 2.6.32-24.41
linux-image-2.6.32-24-versatile - 2.6.32-24.41
linux-image-2.6.32-24-virtual - 2.6.32-24.41
linux-image-2.6.32-308-ec2 - 2.6.32-308.15
linux-image-2.6.33-502-omap - 2.6.33-502.10
Ubuntu 9.10
linux-image-2.6.31-214-dove - 2.6.31-214.30
linux-image-2.6.31-214-dove-z0 - 2.6.31-214.30
linux-image-2.6.31-22-386 - 2.6.31-22.63
linux-image-2.6.31-22-generic - 2.6.31-22.63
linux-image-2.6.31-22-generic-pae - 2.6.31-22.63
linux-image-2.6.31-22-ia64 - 2.6.31-22.63
linux-image-2.6.31-22-lpia - 2.6.31-22.63
linux-image-2.6.31-22-powerpc - 2.6.31-22.63
linux-image-2.6.31-22-powerpc-smp - 2.6.31-22.63
linux-image-2.6.31-22-powerpc64-smp - 2.6.31-22.63
linux-image-2.6.31-22-server - 2.6.31-22.63
linux-image-2.6.31-22-sparc64 - 2.6.31-22.63
linux-image-2.6.31-22-sparc64-smp - 2.6.31-22.63
linux-image-2.6.31-22-virtual - 2.6.31-22.63
linux-image-2.6.31-307-ec2 - 2.6.31-307.17
Ubuntu 9.04
linux-image-2.6.28-19-generic - 2.6.28-19.64
linux-image-2.6.28-19-imx51 - 2.6.28-19.64
linux-image-2.6.28-19-iop32x - 2.6.28-19.64
linux-image-2.6.28-19-ixp4xx - 2.6.28-19.64
linux-image-2.6.28-19-lpia - 2.6.28-19.64
linux-image-2.6.28-19-server - 2.6.28-19.64
linux-image-2.6.28-19-versatile - 2.6.28-19.64
linux-image-2.6.28-19-virtual - 2.6.28-19.64
Ubuntu 8.04 LTS
linux-image-2.6.24-28-386 - 2.6.24-28.75
linux-image-2.6.24-28-generic - 2.6.24-28.75
linux-image-2.6.24-28-hppa32 - 2.6.24-28.75
linux-image-2.6.24-28-hppa64 - 2.6.24-28.75
linux-image-2.6.24-28-itanium - 2.6.24-28.75
linux-image-2.6.24-28-lpia - 2.6.24-28.75
linux-image-2.6.24-28-lpiacompat - 2.6.24-28.75
linux-image-2.6.24-28-mckinley - 2.6.24-28.75
linux-image-2.6.24-28-openvz - 2.6.24-28.75
linux-image-2.6.24-28-powerpc - 2.6.24-28.75
linux-image-2.6.24-28-powerpc-smp - 2.6.24-28.75
linux-image-2.6.24-28-powerpc64-smp - 2.6.24-28.75
linux-image-2.6.24-28-rt - 2.6.24-28.75
linux-image-2.6.24-28-server - 2.6.24-28.75
linux-image-2.6.24-28-sparc64 - 2.6.24-28.75
linux-image-2.6.24-28-sparc64-smp - 2.6.24-28.75
linux-image-2.6.24-28-virtual - 2.6.24-28.75
linux-image-2.6.24-28-xen - 2.6.24-28.75
Ubuntu 6.06 LTS
linux-image-2.6.15-55-386 - 2.6.15-55.87
linux-image-2.6.15-55-686 - 2.6.15-55.87
linux-image-2.6.15-55-amd64-generic - 2.6.15-55.87
linux-image-2.6.15-55-amd64-k8 - 2.6.15-55.87
linux-image-2.6.15-55-amd64-server - 2.6.15-55.87
linux-image-2.6.15-55-amd64-xeon - 2.6.15-55.87
linux-image-2.6.15-55-hppa32 - 2.6.15-55.87
linux-image-2.6.15-55-hppa32-smp - 2.6.15-55.87
linux-image-2.6.15-55-hppa64 - 2.6.15-55.87
linux-image-2.6.15-55-hppa64-smp - 2.6.15-55.87
linux-image-2.6.15-55-itanium - 2.6.15-55.87
linux-image-2.6.15-55-itanium-smp - 2.6.15-55.87
linux-image-2.6.15-55-k7 - 2.6.15-55.87
linux-image-2.6.15-55-mckinley - 2.6.15-55.87
linux-image-2.6.15-55-mckinley-smp - 2.6.15-55.87
linux-image-2.6.15-55-powerpc - 2.6.15-55.87
linux-image-2.6.15-55-powerpc-smp - 2.6.15-55.87
linux-image-2.6.15-55-powerpc64-smp - 2.6.15-55.87
linux-image-2.6.15-55-server - 2.6.15-55.87
linux-image-2.6.15-55-server-bigiron - 2.6.15-55.87
linux-image-2.6.15-55-sparc64 - 2.6.15-55.87
linux-image-2.6.15-55-sparc64-smp - 2.6.15-55.87

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References