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

×
Alerts This Week
Warning Icon 1 504
Alerts This Week
Warning Icon 1 504

Ubuntu 14.04 LTS USN-2636-1: Critical Kernel Issues and Fixes

ubuntu
Calendar Grey June 10, 2015
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux-lts-vivid: Linux hardware enablement kernel from Vivid

Details:

Xiong Zhou discovered a bug in the way the EXT4 filesystem handles

fallocate zero range functionality when the page size is greater than the

block size. A local attacker could exploit this flaw to cause a denial of

service (system crash). (CVE-2015-0275)

Wen Xu discovered a use-after-free flaw in the Linux kernel's ipv4 ping

support. A local user could exploit this flaw to cause a denial of service

(system crash) or gain administrative privileges on the system.

(CVE-2015-3636)

A memory corruption flaw was discovered in the Linux kernel's scsi

subsystem. A local attacker could potentially exploit this flaw to cause a

denial of service (system crash). (CVE-2015-4036)

Topics%20covered

Topics Covered

security advisory denial of service software update ubuntu system crash kernel issues linux-lts-vivid

Update Instructions

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

Ubuntu 14.04 LTS:
  linux-image-3.19.0-20-generic   3.19.0-20.20~14.04.1
  linux-image-3.19.0-20-generic-lpae  3.19.0-20.20~14.04.1
  linux-image-3.19.0-20-lowlatency  3.19.0-20.20~14.04.1
  linux-image-3.19.0-20-powerpc-e500mc  3.19.0-20.20~14.04.1
  linux-image-3.19.0-20-powerpc-smp  3.19.0-20.20~14.04.1
  linux-image-3.19.0-20-powerpc64-emb  3.19.0-20.20~14.04.1
  linux-image-3.19.0-20-powerpc64-smp  3.19.0-20.20~14.04.1

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

https://ubuntu.com/security/notices/USN-2636-1

CVE-2015-0275, CVE-2015-3636, CVE-2015-4036

Severity
critical
Lowest
Low
Medium
High
Critical

June 10, 2015

Topics%20covered

Topics Covered

security advisory denial of service software update ubuntu system crash kernel issues linux-lts-vivid

Package Information

https://launchpad.net/ubuntu/+source/linux-lts-vivid/3.19.0-20.20~14.04.1

Get the latest News and Insights

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