USN-2491-1: Linux kernel (EC2) vulnerabilities
First published: Wed Feb 04 2015(Updated: )
Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment (SS) register in the x86 architecture. A local attacker could exploit this flaw to gain administrative privileges. (CVE-2014-9322) Lars Bull reported a race condition in the PIT (programmable interrupt timer) emulation in the KVM (Kernel Virtual Machine) subsystem of the Linux kernel. A local guest user with access to PIT i/o ports could exploit this flaw to cause a denial of service (crash) on the host. (CVE-2014-3611) Lars Bull and Nadav Amit reported a flaw in how KVM (the Kernel Virtual Machine) handles noncanonical writes to certain MSR registers. A privileged guest user can exploit this flaw to cause a denial of service (kernel panic) on the host. (CVE-2014-3610) Andy Lutomirski discovered an information leak in the Linux kernel's Thread Local Storage (TLS) implementation allowing users to bypass the espfix to obtain information that could be used to bypass the Address Space Layout Randomization (ASLR) protection mechanism. A local user could exploit this flaw to obtain potentially sensitive information from kernel memory. (CVE-2014-8133) Prasad J Pandit reported a flaw in the rock_continue function of the Linux kernel's ISO 9660 CDROM file system. A local user could exploit this flaw to cause a denial of service (system crash or hang). (CVE-2014-9420)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-2.6.32-375-ec2 | <2.6.32-375.92 | 2.6.32-375.92 |
| Ubuntu gir1.2-packagekitglib-1.0 | =10.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2014-3610
- https://ubuntu.com/security/CVE-2014-3611
- https://ubuntu.com/security/CVE-2014-8133
- https://ubuntu.com/security/CVE-2014-9322
- https://ubuntu.com/security/CVE-2014-9420
- https://ubuntu.com/security/notices/USN-2462-1
- https://ubuntu.com/security/notices/USN-2396-1
- https://ubuntu.com/security/notices/USN-2417-1
- https://ubuntu.com/security/notices/USN-2395-1
- https://ubuntu.com/security/notices/USN-2394-1
- https://ubuntu.com/security/notices/USN-2418-1
- https://ubuntu.com/security/notices/USN-2493-1
- https://ubuntu.com/security/notices/USN-2515-1
- https://ubuntu.com/security/notices/USN-2490-1
- https://ubuntu.com/security/notices/USN-2492-1
- https://ubuntu.com/security/notices/USN-2516-1
- https://ubuntu.com/security/notices/USN-2517-1
- https://ubuntu.com/security/notices/USN-2518-1
- https://ubuntu.com/security/notices/USN-2445-1
- https://ubuntu.com/security/notices/USN-2464-1
- https://ubuntu.com/security/notices/USN-2447-1
- https://ubuntu.com/security/notices/USN-2443-1
- https://ubuntu.com/security/notices/USN-2448-1
- https://ubuntu.com/security/notices/USN-2446-1
- https://launchpad.net/ubuntu/+source/linux-ec2/2.6.32-375.92
- https://ubuntu.com/security/notices/USN-2491-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the severity of USN-2491-1?
The severity of USN-2491-1 is considered high due to the potential for local attackers to gain administrative privileges.
How do I fix USN-2491-1?
To fix USN-2491-1, update your Linux kernel to version 2.6.32-375.92 or later.
What versions of Ubuntu are affected by USN-2491-1?
USN-2491-1 affects Ubuntu version 10.04 with the linux-image-2.6.32-375-ec2 package.
What type of attack is possible with USN-2491-1?
USN-2491-1 allows local attackers to exploit a flaw to gain administrative privileges.
Who discovered the vulnerability addressed in USN-2491-1?
The vulnerability in USN-2491-1 was discovered by Andy Lutomirski.
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- version/ubuntu gir1.2-packagekitglib-1.0/10.04