USN-3633-1: Linux kernel (Intel Euclid) vulnerability
24 April 2018
The system could be made to crash or run programs as an administrator.
Releases
Packages
- linux-euclid - Linux kernel for Intel Euclid systems
Details
Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation
in the Linux kernel improperly performed sign extension in some situations.
A local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
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
Related notices
- USN-3523-2: linux-image-4.13.0-1015-oem, linux-image-4.13.0-26-lowlatency, linux-image-4.13.0-26-generic-lpae, linux-hwe, linux-image-4.13.0-1006-gcp, linux-image-4.13.0-26-generic, linux-image-extra-4.13.0-1005-azure, linux-image-extra-4.13.0-26-generic, linux-image-extra-4.13.0-1006-gcp, linux-oem, linux-image-4.13.0-1005-azure, linux-azure, linux-gcp
- USN-3619-2: linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-1016-aws, linux-lts-xenial, linux-image-4.4.0-119-generic-lpae, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-powerpc-e500mc, linux-image-4.4.0-119-powerpc64-smp, linux-aws, linux-image-4.4.0-119-powerpc-smp
- USN-3619-1: linux-raspi2, linux, linux-kvm, linux-image-4.4.0-119-powerpc64-emb, linux-image-4.4.0-1088-snapdragon, linux-image-4.4.0-1086-raspi2, linux-image-4.4.0-119-lowlatency, linux-image-4.4.0-119-generic-lpae, linux-image-extra-4.4.0-119-generic, linux-image-4.4.0-119-generic, linux-image-4.4.0-119-powerpc-e500mc, linux-snapdragon, linux-image-4.4.0-1054-aws, linux-aws, linux-image-4.4.0-119-powerpc-smp, linux-image-4.4.0-1020-kvm, linux-image-4.4.0-119-powerpc64-smp
- USN-3523-1: linux, linux-image-lowlatency, linux-image-4.13.0-25-generic, linux-image-generic, linux-image-4.13.0-25-lowlatency
- USN-3523-3: linux-raspi2, linux-image-raspi2, linux-image-4.13.0-1011-raspi2