USN-3169-4: Linux kernel (Qualcomm Snapdragon) vulnerabilities
11 January 2017
Several security issues were fixed in the kernel.
Releases
Packages
- linux-snapdragon - Linux kernel for Snapdragon Processors
Details
Baozeng Ding discovered a race condition that could lead to a use-after-
free in the Advanced Linux Sound Architecture (ALSA) subsystem of the Linux
kernel. A local attacker could use this to cause a denial of service
(system crash). (CVE-2016-9794)
Andrey Konovalov discovered that signed integer overflows existed in the
setsockopt() system call when handling the SO_SNDBUFFORCE and
SO_RCVBUFFORCE options. A local attacker with the CAP_NET_ADMIN capability
could use this to cause a denial of service (system crash or memory
corruption). (CVE-2016-9793)
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-3169-3: linux-image-4.4.0-1040-raspi2, linux-raspi2
- USN-3168-2: linux-image-generic-lts-trusty, linux-image-3.13.0-107-generic-lpae, linux-image-generic-lpae-lts-trusty, linux-image-3.13.0-107-generic, linux-lts-trusty
- USN-3168-1: linux-image-3.13.0-107-powerpc-e500, linux, linux-image-extra-3.13.0-107-generic, linux-image-3.13.0-107-lowlatency, linux-image-3.13.0-107-generic-lpae, linux-image-3.13.0-107-powerpc64-smp, linux-image-3.13.0-107-powerpc-e500mc, linux-image-3.13.0-107-generic, linux-image-3.13.0-107-powerpc64-emb, linux-image-3.13.0-107-powerpc-smp
- USN-3169-2: linux-image-4.4.0-59-powerpc-smp, linux-image-4.4.0-59-powerpc64-smp, linux-lts-xenial, linux-image-4.4.0-59-generic, linux-image-4.4.0-59-generic-lpae, linux-image-4.4.0-59-powerpc64-emb, linux-image-4.4.0-59-powerpc-e500mc, linux-image-extra-4.4.0-59-generic, linux-image-4.4.0-59-lowlatency
- USN-3169-1: linux, linux-image-4.4.0-59-powerpc-smp, linux-image-4.4.0-59-powerpc64-smp, linux-image-4.4.0-59-generic, linux-image-4.4.0-59-generic-lpae, linux-image-4.4.0-59-powerpc64-emb, linux-image-4.4.0-59-powerpc-e500mc, linux-image-extra-4.4.0-59-generic, linux-image-4.4.0-59-lowlatency
- USN-3170-2: linux-image-4.8.0-1022-raspi2, linux-raspi2, linux-image-raspi2
- USN-3170-1: linux-image-generic, linux-image-4.8.0-34-powerpc-smp, linux-image-generic-lpae, linux-image-4.8.0-34-powerpc-e500mc, linux-image-4.8.0-34-generic, linux, linux-image-4.8.0-34-lowlatency, linux-image-4.8.0-34-generic-lpae, linux-image-powerpc64-emb, linux-image-lowlatency, linux-image-4.8.0-34-powerpc64-emb, linux-image-powerpc-e500mc, linux-image-powerpc-smp
- USN-3167-1: linux-image-generic, linux-image-powerpc64-smp, linux-image-3.2.0-120-powerpc64-smp, linux-image-3.2.0-120-virtual, linux-image-3.2.0-120-generic, linux, linux-image-3.2.0-120-highbank, linux-image-3.2.0-120-generic-pae, linux-image-3.2.0-120-powerpc-smp, linux-image-3.2.0-120-omap, linux-image-virtual, linux-image-highbank, linux-image-omap, linux-image-generic-pae, linux-image-powerpc-smp
- USN-3167-2: linux-ti-omap4, linux-image-3.2.0-1498-omap4, linux-image-omap4