USN-2846-1: Linux kernel vulnerabilities
First published: Sat Dec 19 2015(Updated: )
Felix Wilhelm discovered a race condition in the Xen paravirtualized drivers which can cause double fetch vulnerabilities. An attacker in the paravirtualized guest could exploit this flaw to cause a denial of service (crash the host) or potentially execute arbitrary code on the host. (CVE-2015-8550) Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not perform consistency checks on the device's state. An attacker could exploit this flaw to cause a denial of service (NULL dereference) on the host. (CVE-2015-8551) Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not perform consistency checks on the device's state. An attacker could exploit this flaw to cause a denial of service by flooding the logging system with WARN() messages causing the initial domain to exhaust disk space. (CVE-2015-8552)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-3.2.0-97-generic | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 | ||
| All of | ||
| ubuntu/linux-image-3.2.0-97-generic-pae | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 | ||
| All of | ||
| ubuntu/linux-image-3.2.0-97-highbank | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 | ||
| All of | ||
| ubuntu/linux-image-3.2.0-97-omap | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 | ||
| All of | ||
| ubuntu/linux-image-3.2.0-97-powerpc-smp | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 | ||
| All of | ||
| ubuntu/linux-image-3.2.0-97-powerpc64-smp | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 | ||
| All of | ||
| ubuntu/linux-image-3.2.0-97-virtual | <3.2.0-97.137 | 3.2.0-97.137 |
| =12.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2015-8550
- https://ubuntu.com/security/CVE-2015-8551
- https://ubuntu.com/security/CVE-2015-8552
- https://ubuntu.com/security/notices/USN-2853-1
- https://ubuntu.com/security/notices/USN-2851-1
- https://ubuntu.com/security/notices/USN-2848-1
- https://ubuntu.com/security/notices/USN-2891-1
- https://ubuntu.com/security/notices/USN-2886-2
- https://ubuntu.com/security/notices/USN-2849-1
- https://ubuntu.com/security/notices/USN-2854-1
- https://ubuntu.com/security/notices/USN-2850-1
- https://ubuntu.com/security/notices/USN-2847-1
- https://launchpad.net/ubuntu/+source/linux/3.2.0-97.137
- https://ubuntu.com/security/notices/USN-2846-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the vulnerability ID for this Linux kernel vulnerability?
The vulnerability ID for this Linux kernel vulnerability is CVE-2015-8550.
What is the impact of CVE-2015-8550?
This vulnerability can cause a denial of service (crash the host) or potentially execute arbitrary code on the host.
Which software versions are affected by CVE-2015-8550?
Ubuntu 12.04 with Linux kernel versions up to 3.2.0-97.137 are affected.
How can I fix CVE-2015-8550?
To fix CVE-2015-8550, upgrade the Linux kernel to version 3.2.0-97.137 or higher.
Where can I find more information about CVE-2015-8550?
More information about CVE-2015-8550 can be found at the following link: [CVE-2015-8550](https://ubuntu.com/security/CVE-2015-8550)
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