USN-3384-1: Linux kernel vulnerabilities

Releases

• Ubuntu 17.04

Packages

• linux - Linux kernel
• linux-raspi2 - Linux kernel for Raspberry Pi 2

Details

Andrey Konovalov discovered a race condition in the UDP Fragmentation
Offload (UFO) code in the Linux kernel. A local attacker could use this to
cause a denial of service or execute arbitrary code. (CVE-2017-1000112)

Andrey Konovalov discovered a race condition in AF_PACKET socket option
handling code in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2017-1000111)

Update instructions

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

Ubuntu 17.04

• linux-image-4.10.0-32-generic-lpae - 4.10.0-32.36
• linux-image-generic - 4.10.0.32.32
• linux-image-generic-lpae - 4.10.0.32.32
• linux-image-4.10.0-32-generic - 4.10.0-32.36
• linux-image-4.10.0-1015-raspi2 - 4.10.0-1015.18
• linux-image-4.10.0-32-lowlatency - 4.10.0-32.36
• linux-image-lowlatency - 4.10.0.32.32
• linux-image-raspi2 - 4.10.0.1015.16

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-2017-1000111
• CVE-2017-1000112

Related notices

• USN-3385-2
• USN-3385-1
• USN-3386-1
• USN-3386-2
• USN-3384-2