Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 564
Alerts This Week
Warning Icon 1 564

Ubuntu 12.04 LTS: USN-2680-1 Critical Denial Of Service Risks

ubuntu
Calendar Grey July 24, 2015
Scroller Ubuntu
Explore security updates for Ubuntu 12.04 LTS addressing kernel issues and crucial fixes to secure your system.
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-trusty: Linux hardware enablement kernel from Trusty

Details:

A flaw was discovered in the user space memory copying for the pipe iovecs

in the Linux kernel. An unprivileged local user could exploit this flaw to

cause a denial of service (system crash) or potentially escalate their

privileges. (CVE-2015-1805)

A flaw was discovered in the kvm (kernel virtual machine) subsystem's

kvm_apic_has_events function. A unprivileged local user could exploit this

flaw to cause a denial of service (system crash). (CVE-2015-4692)

Daniel Borkmann reported a kernel crash in the Linux kernel's BPF filter

JIT optimization. A local attacker could exploit this flaw to cause a

denial of service (system crash). (CVE-2015-4700)

A flaw was discovered in how the Linux kernel handles invalid UDP

checksums. A remote attacker could exploit this flaw to cause a denial of

service using a flood of UDP...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel system update ubuntu linux-lts-trusty

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
  linux-image-3.13.0-58-generic   3.13.0-58.97~precise1
  linux-image-3.13.0-58-generic-lpae  3.13.0-58.97~precise1

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

https://ubuntu.com/security/notices/USN-2680-1

CVE-2015-1805, CVE-2015-4692, CVE-2015-4700, CVE-2015-5364,

CVE-2015-5366

Severity
critical
Lowest
Low
Medium
High
Critical

July 23, 2015

Topics%20covered

Topics Covered

security advisory denial of service critical kernel system update ubuntu linux-lts-trusty

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-trusty/3.13.0-58.97~precise1

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.