Home / vulnerabilities Ubuntu Security Notice USN-2467-1
Posted on 14 January 2015
Source : packetstormsecurity.org Link
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Ubuntu Security Notice USN-2467-1
January 13, 2015
linux-lts-utopic vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux-lts-utopic: Linux hardware enablement kernel from Utopic
Details:
A null pointer dereference flaw was discovered in the the Linux kernel's
SCTP implementation when ASCONF is used. A remote attacker could exploit
this flaw to cause a denial of service (system crash) via a malformed INIT
chunk. (CVE-2014-7841)
A race condition with MMIO and PIO transactions in the KVM (Kernel Virtual
Machine) subsystem of the Linux kernel was discovered. A guest OS user
could exploit this flaw to cause a denial of service (guest OS crash) via a
specially crafted application. (CVE-2014-7842)
Milo=C5=A1 Prchl=C3=ADk reported a flaw in how the ARM64 platform handles a single
byte overflow in __clear_user. A local user could exploit this flaw to
cause a denial of service (system crash) by reading one byte beyond a
/dev/zero page boundary. (CVE-2014-7843)
A stack buffer overflow was discovered in the ioctl command handling for
the Technotrend/Hauppauge USB DEC devices driver. A local user could
exploit this flaw to cause a denial of service (system crash) or possibly
gain privileges. (CVE-2014-8884)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-3.16.0-29-generic 3.16.0-29.39~14.04.1
linux-image-3.16.0-29-generic-lpae 3.16.0-29.39~14.04.1
linux-image-3.16.0-29-lowlatency 3.16.0-29.39~14.04.1
linux-image-3.16.0-29-powerpc-e500mc 3.16.0-29.39~14.04.1
linux-image-3.16.0-29-powerpc-smp 3.16.0-29.39~14.04.1
linux-image-3.16.0-29-powerpc64-emb 3.16.0-29.39~14.04.1
linux-image-3.16.0-29-powerpc64-smp 3.16.0-29.39~14.04.1
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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.
References:
http://www.ubuntu.com/usn/usn-2467-1
CVE-2014-7841, CVE-2014-7842, CVE-2014-7843, CVE-2014-8884
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-29.39~14.04.1
