USN-3071-1: Linux kernel vulnerabilities

Releases

• Ubuntu 14.04 ESM

Packages

• linux - Linux kernel

Details

Kangjie Lu discovered an information leak in the Reliable Datagram Sockets
(RDS) implementation in the Linux kernel. A local attacker could use this
to obtain potentially sensitive information from kernel memory.
(CVE-2016-5244)

Yue Cao et al discovered a flaw in the TCP implementation's handling of
challenge acks in the Linux kernel. A remote attacker could use this to
cause a denial of service (reset connection) or inject content into an TCP
stream. (CVE-2016-5696)

Pengfei Wang discovered a race condition in the MIC VOP driver in the Linux
kernel. A local attacker could use this to cause a denial of service
(system crash) or obtain potentially sensitive information from kernel
memory. (CVE-2016-5728)

Cyril Bur discovered that on PowerPC platforms, the Linux kernel mishandled
transactional memory state on exec(). A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2016-5828)

It was discovered that a heap based buffer overflow existed in the USB HID
driver in the Linux kernel. A local attacker could use this cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2016-5829)

Update instructions

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

Ubuntu 14.04

• linux-image-3.13.0-95-generic - 3.13.0-95.142
• linux-image-3.13.0-95-generic-lpae - 3.13.0-95.142
• linux-image-3.13.0-95-lowlatency - 3.13.0-95.142
• linux-image-3.13.0-95-powerpc-e500 - 3.13.0-95.142
• linux-image-3.13.0-95-powerpc-e500mc - 3.13.0-95.142
• linux-image-3.13.0-95-powerpc-smp - 3.13.0-95.142
• linux-image-3.13.0-95-powerpc64-emb - 3.13.0-95.142
• linux-image-3.13.0-95-powerpc64-smp - 3.13.0-95.142

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-2016-5244
• CVE-2016-5696
• CVE-2016-5728
• CVE-2016-5828
• CVE-2016-5829

Related notices

• USN-3072-2: linux-ti-omap4, linux-image-3.2.0-1487-omap4
• USN-3072-1: linux-image-3.2.0-109-highbank, linux-image-3.2.0-109-omap, linux-image-3.2.0-109-powerpc-smp, linux-image-3.2.0-109-virtual, linux-image-3.2.0-109-powerpc64-smp, linux, linux-image-3.2.0-109-generic, linux-image-3.2.0-109-generic-pae
• USN-3070-1: linux-image-4.4.0-36-generic, linux-image-4.4.0-36-lowlatency, linux-image-extra-4.4.0-36-generic, linux-image-4.4.0-36-generic-lpae, linux-image-4.4.0-36-powerpc-e500mc, linux, linux-image-4.4.0-36-powerpc64-smp, linux-image-4.4.0-36-powerpc-smp, linux-image-4.4.0-36-powerpc64-emb
• USN-3070-2: linux-raspi2, linux-image-4.4.0-1021-raspi2
• USN-3071-2: linux-image-3.13.0-95-generic, linux-image-3.13.0-95-generic-lpae, linux-lts-trusty
• USN-3070-3: linux-image-4.4.0-1024-snapdragon, linux-snapdragon
• USN-3070-4: linux-image-4.4.0-36-generic, linux-image-4.4.0-36-lowlatency, linux-image-extra-4.4.0-36-generic, linux-image-4.4.0-36-generic-lpae, linux-image-4.4.0-36-powerpc-e500mc, linux-lts-xenial, linux-image-4.4.0-36-powerpc64-smp, linux-image-4.4.0-36-powerpc-smp, linux-image-4.4.0-36-powerpc64-emb