USN-3170-2: Linux kernel (Raspberry Pi 2) vulnerabilities

11 January 2017

Several security issues were fixed in the kernel.

Releases

Packages

Details

Andrey Konovalov discovered that the ipv6 icmp implementation in the Linux
kernel did not properly check data structures on send. A remote attacker
could use this to cause a denial of service (system crash). (CVE-2016-9919)

Andrey Konovalov discovered that signed integer overflows existed in the
setsockopt() system call when handling the SO_SNDBUFFORCE and
SO_RCVBUFFORCE options. A local attacker with the CAP_NET_ADMIN capability
could use this to cause a denial of service (system crash or memory
corruption). (CVE-2016-9793)

Update instructions

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

Ubuntu 16.10

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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

Related notices

  • USN-3169-2: linux-image-4.4.0-59-generic-lpae, linux-image-4.4.0-59-lowlatency, linux-lts-xenial, linux-image-4.4.0-59-generic, linux-image-extra-4.4.0-59-generic, linux-image-4.4.0-59-powerpc-e500mc, linux-image-4.4.0-59-powerpc64-emb, linux-image-4.4.0-59-powerpc-smp, linux-image-4.4.0-59-powerpc64-smp
  • USN-3168-1: linux-image-3.13.0-107-powerpc-e500mc, linux-image-3.13.0-107-powerpc-smp, linux-image-3.13.0-107-lowlatency, linux-image-3.13.0-107-powerpc-e500, linux-image-3.13.0-107-powerpc64-emb, linux-image-3.13.0-107-powerpc64-smp, linux-image-extra-3.13.0-107-generic, linux, linux-image-3.13.0-107-generic-lpae, linux-image-3.13.0-107-generic
  • USN-3169-4: linux-snapdragon, linux-image-4.4.0-1044-snapdragon
  • USN-3170-1: linux-image-lowlatency, linux-image-4.8.0-34-powerpc-smp, linux-image-4.8.0-34-lowlatency, linux-image-powerpc-smp, linux-image-generic-lpae, linux-image-powerpc-e500mc, linux, linux-image-generic, linux-image-powerpc64-emb, linux-image-4.8.0-34-generic, linux-image-4.8.0-34-generic-lpae, linux-image-4.8.0-34-powerpc64-emb, linux-image-4.8.0-34-powerpc-e500mc
  • USN-3169-1: linux-image-4.4.0-59-generic-lpae, linux-image-4.4.0-59-generic, linux-image-extra-4.4.0-59-generic, linux-image-4.4.0-59-powerpc-e500mc, linux-image-4.4.0-59-powerpc64-emb, linux, linux-image-4.4.0-59-powerpc-smp, linux-image-4.4.0-59-lowlatency, linux-image-4.4.0-59-powerpc64-smp
  • USN-3168-2: linux-image-generic-lts-trusty, linux-image-3.13.0-107-generic-lpae, linux-image-3.13.0-107-generic, linux-lts-trusty, linux-image-generic-lpae-lts-trusty
  • USN-3169-3: linux-image-4.4.0-1040-raspi2, linux-raspi2