USN-2066-1: Linux kernel vulnerabilities

3 January 2014

linux vulnerabilities

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

  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in the kernel.

Software Description

  • linux - Linux kernel

Details

A flaw was discovered in the Linux kernel’s dm snapshot facility. A remote authenticated user could exploit this flaw to obtain sensitive information or modify/corrupt data. (CVE-2013-4299)

Hannes Frederic Sowa discovered a flaw in the Linux kernel’s UDP Fragmentation Offload (UFO). An unprivileged local user could exploit this flaw to cause a denial of service (system crash) or possibly gain administrative privileges. (CVE-2013-4470)

Multiple integer overflow flaws were discovered in the Alchemy LCD frame- buffer drivers in the Linux kernel. An unprivileged local user could exploit this flaw to gain administrative privileges. (CVE-2013-4511)

Nico Golde and Fabian Yamaguchi reported a flaw in the Linux kernel’s driver for Agere Systems HERMES II Wireless PC Cards. A local user with the CAP_NET_ADMIN capability could exploit this flaw to cause a denial of service or possibly gain adminstrative priviliges. (CVE-2013-4514)

Nico Golde and Fabian Yamaguchi reported a flaw in the Linux kernel’s driver for Beceem WIMAX chipset based devices. An unprivileged local user could exploit this flaw to obtain sensitive information from kernel memory. (CVE-2013-4515)

A flaw in the handling of memory regions of the kernel virtual machine (KVM) subsystem was discovered. A local user with the ability to assign a device could exploit this flaw to cause a denial of service (memory consumption). (CVE-2013-4592)

Nico Golde and Fabian Yamaguchi reported a flaw in the Linux kernel’s debugfs filesystem. An administrative local user could exploit this flaw to cause a denial of service (OOPS). (CVE-2013-6378)

A flaw was discovered in the Linux kernel’s compat ioctls for Adaptec AACRAID scsi raid devices. An unprivileged local user could send administrative commands to these devices potentially compromising the data stored on the device. (CVE-2013-6383)

Nico Golde reported a flaw in the Linux kernel’s userspace IO (uio) driver. A local user could exploit this flaw to cause a denial of service (memory corruption) or possibly gain privileges. (CVE-2013-6763)

Evan Huus reported a buffer overflow in the Linux kernel’s radiotap header parsing. A remote attacker could cause a denial of service (buffer over- read) via a specially crafted header. (CVE-2013-7027)

An information leak was discovered in the Linux kernel’s SIOCWANDEV ioctl call. A local user with the CAP_NET_ADMIN capability could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-1444)

An information leak was discovered in the wanxl ioctl function the Linux kernel. A local user could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-1445)

Update instructions

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

Ubuntu 12.04 LTS
linux-image-3.2.0-58-generic - 3.2.0-58.88
linux-image-3.2.0-58-generic-pae - 3.2.0-58.88
linux-image-3.2.0-58-highbank - 3.2.0-58.88
linux-image-3.2.0-58-omap - 3.2.0-58.88
linux-image-3.2.0-58-powerpc-smp - 3.2.0-58.88
linux-image-3.2.0-58-powerpc64-smp - 3.2.0-58.88
linux-image-3.2.0-58-virtual - 3.2.0-58.88

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.

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 automatically perform this as well.

References