USN-3190-2: Linux kernel (Raspberry Pi 2) vulnerabilities

Releases

• Ubuntu 16.10

Packages

• linux-raspi2 - Linux kernel for Raspberry Pi 2

Details

Mikulas Patocka discovered that the asynchronous multibuffer cryptographic
daemon (mcryptd) in the Linux kernel did not properly handle being invoked
with incompatible algorithms. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-10147)

It was discovered that a use-after-free existed in the KVM susbsystem of
the Linux kernel when creating devices. A local attacker could use this to
cause a denial of service (system crash). (CVE-2016-10150)

Qidan He discovered that the ICMP implementation in the Linux kernel did
not properly check the size of an ICMP header. A local attacker with
CAP_NET_ADMIN could use this to expose sensitive information.
(CVE-2016-8399)

Qian Zhang discovered a heap-based buffer overflow in the tipc_msg_build()
function in the Linux kernel. A local attacker could use to cause a denial
of service (system crash) or possible execute arbitrary code with
administrative privileges. (CVE-2016-8632)

Dmitry Vyukov discovered that the KVM implementation in the Linux kernel
did not properly restrict the VCPU index when I/O APIC is enabled, An
attacker in a guest VM could use this to cause a denial of service (system
crash) or possibly gain privileges in the host OS. (CVE-2016-9777)

Update instructions

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

Ubuntu 16.10

• linux-image-4.8.0-1024-raspi2 - 4.8.0-1024.27
• linux-image-raspi2 - 4.8.0.1024.27

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.

References

• CVE-2016-10147
• CVE-2016-10150
• CVE-2016-8399
• CVE-2016-8632
• CVE-2016-9777

Related notices

• USN-3190-1: linux-image-4.8.0-37-powerpc64-emb, linux-image-4.8.0-37-generic-lpae, linux-image-powerpc-e500mc, linux-image-4.8.0-37-generic, linux-image-generic-lpae, linux-image-powerpc-smp, linux-image-generic, linux-image-4.8.0-37-powerpc-smp, linux-image-powerpc64-emb, linux-image-4.8.0-37-powerpc-e500mc, linux, linux-image-4.8.0-37-lowlatency, linux-image-lowlatency
• USN-3189-1: linux-image-4.4.0-62-lowlatency, linux-image-4.4.0-62-generic-lpae, linux-image-4.4.0-1042-raspi2, linux-snapdragon, linux-image-extra-4.4.0-62-generic, linux-image-4.4.0-62-powerpc-smp, linux-raspi2, linux-image-4.4.0-62-generic, linux-image-4.4.0-62-powerpc64-smp, linux, linux-image-4.4.0-62-powerpc-e500mc, linux-image-4.4.0-62-powerpc64-emb, linux-image-4.4.0-1046-snapdragon
• USN-3189-2: linux-image-4.4.0-62-lowlatency, linux-image-4.4.0-62-generic-lpae, linux-lts-xenial, linux-image-extra-4.4.0-62-generic, linux-image-4.4.0-62-generic, linux-image-4.4.0-62-powerpc64-smp, linux-image-4.4.0-62-powerpc-e500mc, linux-image-4.4.0-62-powerpc64-emb, linux-image-4.4.0-62-powerpc-smp
• USN-3312-2: linux-image-4.4.0-79-powerpc-smp, linux-image-4.4.0-79-generic, linux-image-extra-4.4.0-79-generic, linux-lts-xenial, linux-image-4.4.0-79-generic-lpae, linux-image-4.4.0-79-lowlatency, linux-image-4.4.0-79-powerpc-e500mc, linux-image-4.4.0-79-powerpc64-emb, linux-image-4.4.0-79-powerpc64-smp
• USN-3312-1: linux-aws, linux-image-4.4.0-1057-raspi2, linux-image-4.4.0-79-powerpc-smp, linux-image-4.4.0-79-generic, linux-image-extra-4.4.0-79-generic, linux-snapdragon, linux-image-4.4.0-79-generic-lpae, linux-image-4.4.0-1018-aws, linux-image-4.4.0-79-lowlatency, linux-image-4.4.0-1014-gke, linux-image-4.4.0-1059-snapdragon, linux-image-4.4.0-79-powerpc-e500mc, linux-image-4.4.0-79-powerpc64-smp, linux-gke, linux-image-extra-4.4.0-1014-gke, linux-raspi2, linux, linux-image-4.4.0-79-powerpc64-emb
• USN-3470-2: linux-image-3.13.0-135-generic, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-135-generic-lpae, linux-image-generic-lts-trusty, linux-lts-trusty
• USN-3470-1: linux-image-3.13.0-135-powerpc-e500, linux-image-3.13.0-135-powerpc-smp, linux-image-3.13.0-135-generic, linux-image-3.13.0-135-powerpc64-smp, linux-image-3.13.0-135-generic-lpae, linux-image-3.13.0-135-powerpc-e500mc, linux-image-3.13.0-135-powerpc64-emb, linux-image-3.13.0-135-lowlatency, linux, linux-image-extra-3.13.0-135-generic