USN-3162-1: Linux kernel vulnerabilities

Releases

• Ubuntu 16.10

Packages

• linux - Linux kernel

Details

CAI Qian discovered that shared bind mounts in a mount namespace
exponentially added entries without restriction to the Linux kernel's mount
table. A local attacker could use this to cause a denial of service (system
crash). (CVE-2016-6213)

It was discovered that the KVM implementation for x86/x86_64 in the Linux
kernel could dereference a null pointer. An attacker in a guest virtual
machine could use this to cause a denial of service (system crash) in the
KVM host. (CVE-2016-8630)

Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation
in the Linux kernel contained a buffer overflow when handling fragmented
packets. A remote attacker could use this to possibly execute arbitrary
code with administrative privileges. (CVE-2016-8633)

Marco Grassi discovered that the TCP implementation in the Linux kernel
mishandles socket buffer (skb) truncation. A local attacker could use this
to cause a denial of service (system crash). (CVE-2016-8645)

It was discovered that the keyring implementation in the Linux kernel
improperly handled crypto registration in conjunction with successful key-
type registration. A local attacker could use this to cause a denial of
service (system crash). (CVE-2016-9313)

Andrey Konovalov discovered that the SCTP implementation in the Linux
kernel improperly handled validation of incoming data. A remote attacker
could use this to cause a denial of service (system crash). (CVE-2016-9555)

Update instructions

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

Ubuntu 16.10

• linux-image-4.8.0-32-generic - 4.8.0-32.34
• linux-image-powerpc-e500mc - 4.8.0.32.41
• linux-image-4.8.0-32-powerpc-smp - 4.8.0-32.34
• linux-image-4.8.0-32-powerpc-e500mc - 4.8.0-32.34
• linux-image-powerpc-smp - 4.8.0.32.41
• linux-image-generic - 4.8.0.32.41
• linux-image-4.8.0-32-generic-lpae - 4.8.0-32.34
• linux-image-lowlatency - 4.8.0.32.41
• linux-image-powerpc64-emb - 4.8.0.32.41
• linux-image-generic-lpae - 4.8.0.32.41
• linux-image-4.8.0-32-powerpc64-emb - 4.8.0-32.34
• linux-image-4.8.0-32-lowlatency - 4.8.0-32.34

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-2016-9313
• CVE-2016-6213
• CVE-2016-8630
• CVE-2016-8633
• CVE-2016-8645
• CVE-2016-9555

Related notices

• USN-3162-2: linux-image-4.8.0-1021-raspi2, linux-raspi2, linux-image-raspi2
• USN-3160-2: linux-image-generic-lts-trusty, linux-image-3.13.0-106-generic, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-106-generic-lpae, linux-lts-trusty
• USN-3161-4: linux-snapdragon, linux-image-4.4.0-1042-snapdragon
• USN-3161-1: linux-image-4.4.0-57-powerpc64-emb, linux-image-4.4.0-57-generic, linux-image-4.4.0-57-powerpc-smp, linux, linux-image-extra-4.4.0-57-generic, linux-image-4.4.0-57-powerpc-e500mc, linux-image-4.4.0-57-powerpc64-smp, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-lowlatency
• USN-3161-3: linux-image-4.4.0-1038-raspi2, linux-raspi2
• USN-3161-2: linux-image-4.4.0-57-powerpc64-emb, linux-image-4.4.0-57-generic, linux-image-4.4.0-57-powerpc-smp, linux-lts-xenial, linux-image-extra-4.4.0-57-generic, linux-image-4.4.0-57-powerpc-e500mc, linux-image-4.4.0-57-powerpc64-smp, linux-image-4.4.0-57-generic-lpae, linux-image-4.4.0-57-lowlatency
• USN-3160-1: linux-image-3.13.0-106-lowlatency, linux, linux-image-3.13.0-106-generic, linux-image-3.13.0-106-powerpc64-smp, linux-image-3.13.0-106-powerpc-smp, linux-image-3.13.0-106-powerpc64-emb, linux-image-3.13.0-106-generic-lpae, linux-image-3.13.0-106-powerpc-e500, linux-image-3.13.0-106-powerpc-e500mc, linux-image-extra-3.13.0-106-generic
• USN-3445-1: linux-image-3.13.0-133-lowlatency, linux-image-3.13.0-133-powerpc-e500, linux-image-3.13.0-133-powerpc64-smp, linux-image-3.13.0-133-generic-lpae, linux, linux-image-3.13.0-133-powerpc64-emb, linux-image-extra-3.13.0-133-generic, linux-image-3.13.0-133-generic, linux-image-3.13.0-133-powerpc-e500mc, linux-image-3.13.0-133-powerpc-smp
• USN-3445-2: linux-image-3.13.0-133-generic-lpae, linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-133-generic, linux-lts-trusty
• USN-3290-1: linux-image-3.13.0-119-powerpc-e500, linux-image-3.13.0-119-generic, linux-image-3.13.0-119-powerpc-smp, linux, linux-image-3.13.0-119-generic-lpae, linux-image-3.13.0-119-powerpc-e500mc, linux-image-3.13.0-119-powerpc64-emb, linux-image-3.13.0-119-powerpc64-smp, linux-image-3.13.0-119-lowlatency, linux-image-extra-3.13.0-119-generic
• USN-3187-1: linux-image-generic, linux-image-3.2.0-121-generic-pae, linux-image-3.2.0-121-virtual, linux-image-powerpc64-smp, linux-image-3.2.0-121-powerpc64-smp, linux, linux-image-3.2.0-121-omap, linux-image-virtual, linux-image-highbank, linux-image-3.2.0-121-powerpc-smp, linux-image-3.2.0-121-highbank, linux-image-generic-pae, linux-image-omap, linux-image-powerpc-smp, linux-image-3.2.0-121-generic
• USN-3187-2: linux-ti-omap4, linux-image-omap4, linux-image-3.2.0-1499-omap4
• USN-3188-1: linux-image-3.13.0-108-powerpc64-smp, linux-image-3.13.0-108-generic, linux, linux-image-3.13.0-108-powerpc-e500, linux-image-3.13.0-108-powerpc-smp, linux-image-3.13.0-108-lowlatency, linux-image-3.13.0-108-powerpc-e500mc, linux-image-3.13.0-108-generic-lpae, linux-image-extra-3.13.0-108-generic, linux-image-3.13.0-108-powerpc64-emb
• USN-3188-2: linux-image-3.13.0-108-generic, linux-image-generic-lts-trusty, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-108-generic-lpae, linux-lts-trusty