USN-3072-1: Linux kernel vulnerabilities
29 August 2016
Several security issues were fixed in the kernel.
- linux - Linux kernel
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.
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
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.
The problem can be corrected by updating your system to the following package versions:
- linux-image-3.2.0-109-generic - 3.2.0-109.150
- linux-image-3.2.0-109-generic-pae - 3.2.0-109.150
- linux-image-3.2.0-109-highbank - 3.2.0-109.150
- linux-image-3.2.0-109-omap - 3.2.0-109.150
- linux-image-3.2.0-109-powerpc-smp - 3.2.0-109.150
- linux-image-3.2.0-109-powerpc64-smp - 3.2.0-109.150
- linux-image-3.2.0-109-virtual - 3.2.0-109.150
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.