Ubuntu Security Notice USN-3126-1
11th November, 2016
linux vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in the kernel.
Software description
- linux
– Linux kernel
Details
Ondrej Kozina discovered that the keyring interface in the Linux kernel
contained a buffer overflow when displaying timeout events via the
/proc/keys interface. A local attacker could use this to cause a denial of
service (system crash). (CVE-2016-7042)
Dmitry Vyukov discovered a use-after-free vulnerability during error
processing in the recvmmsg(2) implementation in the Linux kernel. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2016-7117)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 12.04 LTS:
-
linux-image-3.2.0-115-generic
3.2.0-115.157
-
linux-image-3.2.0-115-powerpc-smp
3.2.0-115.157
-
linux-image-powerpc
3.2.0.115.131
-
linux-image-3.2.0-115-virtual
3.2.0-115.157
-
linux-image-3.2.0-115-highbank
3.2.0-115.157
-
linux-image-3.2.0-115-omap
3.2.0-115.157
-
linux-image-highbank
3.2.0.115.131
-
linux-image-powerpc-smp
3.2.0.115.131
-
linux-image-virtual
3.2.0.115.131
-
linux-image-3.2.0-115-generic-pae
3.2.0-115.157
-
linux-image-powerpc64-smp
3.2.0.115.131
-
linux-image-generic-pae
3.2.0.115.131
-
linux-image-generic
3.2.0.115.131
-
linux-image-omap
3.2.0.115.131
-
linux-image-3.2.0-115-powerpc64-smp
3.2.0-115.157
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
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.