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Ubuntu 17.04 USN-3419-1 Critical: Kernel Buffer Overflows Detected

ubuntu
Calendar Grey September 18, 2017
Dist Ubuntu Esm H88
Various kernel issue fixes have been announced in the Ubuntu USN-3419-1 advisory, targeting performance-affecting flaws.
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:

It was discovered that a buffer overflow existed in the Bluetooth stack of

the Linux kernel when handling L2CAP configuration responses. A physically

proximate attacker could use this to cause a denial of service (system

crash). (CVE-2017-1000251)

It was discovered that a buffer overflow existed in the Broadcom FullMAC

WLAN driver in the Linux kernel. A local attacker could use this to cause a

denial of service (system crash) or possibly execute arbitrary code.

(CVE-2017-7541)

Topics%20covered

Topics Covered

security advisory buffer overflow kernel update Ubuntu system crash Bluetooth vulnerability WLAN driver vulnerability

Update Instructions

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

Ubuntu 17.04:
  linux-image-4.10.0-1018-raspi2  4.10.0-1018.21
  linux-image-4.10.0-35-generic   4.10.0-35.39
  linux-image-4.10.0-35-generic-lpae  4.10.0-35.39
  linux-image-4.10.0-35-lowlatency  4.10.0-35.39
  linux-image-generic             4.10.0.35.35
  linux-image-generic-lpae        4.10.0.35.35
  linux-image-lowlatency          4.10.0.35.35
  linux-image-raspi2              4.10.0.1018.19

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-3419-1

CVE-2017-1000251, CVE-2017-7541

Severity
critical
Lowest
Low
Medium
High
Critical

September 18, 2017

Topics%20covered

Topics Covered

security advisory buffer overflow kernel update Ubuntu system crash Bluetooth vulnerability WLAN driver vulnerability

Package Information

https://launchpad.net/ubuntu/+source/linux/4.10.0-35.39
https://launchpad.net/ubuntu/+source/linux-raspi2/4.10.0-1018.21

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