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Ubuntu 17.04: USN-3377-1 Critical Denial Of Service Issues

ubuntu
Calendar Grey August 3, 2017
Dist Ubuntu Esm H88
Numerous vulnerabilities in the Linux kernel have been addressed. Make sure to upgrade systems for enhanced protection.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-raspi2: Linux kernel for Raspberry Pi 2

Details:

Fan Wu and Shixiong Zhao discovered a race condition between inotify events

and vfs rename operations in the Linux kernel. An unprivileged local

attacker could use this to cause a denial of service (system crash) or

execute arbitrary code. (CVE-2017-7533)

It was discovered that the Linux kernel did not properly restrict

RLIMIT_STACK size. A local attacker could use this in conjunction with

another vulnerability to possibly execute arbitrary code.

(CVE-2017-1000365)

李强 discovered that the Virtio GPU driver in the Linux kernel did not

properly free memory in some situations. A local attacker could use this to

cause a denial of service (memory consumption). (CVE-2017-10810)

石磊 discovered that the RxRPC Kerberos 5 ticket handling code in the

Linux kernel did not properly verify metadata. A remo...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical arbitrary code execution Ubuntu kernel

Update Instructions

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

Ubuntu 17.04:
  linux-image-4.10.0-1013-raspi2  4.10.0-1013.16
  linux-image-4.10.0-30-generic   4.10.0-30.34
  linux-image-4.10.0-30-generic-lpae  4.10.0-30.34
  linux-image-4.10.0-30-lowlatency  4.10.0-30.34
  linux-image-generic             4.10.0.30.31
  linux-image-generic-lpae        4.10.0.30.31
  linux-image-lowlatency          4.10.0.30.31
  linux-image-raspi2              4.10.0.1013.15

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.

References

https://ubuntu.com/security/notices/USN-3377-1

CVE-2017-1000365, CVE-2017-10810, CVE-2017-7482, CVE-2017-7533

Severity
critical
Lowest
Low
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Critical

August 03, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical arbitrary code execution Ubuntu kernel

Package Information

https://launchpad.net/ubuntu/+source/linux/4.10.0-30.34
https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1013.16

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