USN-2546-1: Linux kernel vulnerabilities
First published: Tue Mar 24 2015(Updated: )
A flaw was discovered in the automatic loading of modules in the crypto subsystem of the Linux kernel. A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges. (CVE-2013-7421) A flaw was discovered in the crypto subsystem when screening module names for automatic module loading if the name contained a valid crypto module name, eg. vfat(aes). A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges. (CVE-2014-9644) Sun Baoliang discovered a use after free flaw in the Linux kernel's SCTP (Stream Control Transmission Protocol) subsystem during INIT collisions. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially escalate their privileges on the system. (CVE-2015-1421) Marcelo Leitner discovered a flaw in the Linux kernel's routing of packets to too many different dsts/too fast. A remote attacker on the same subnet can exploit this flaw to cause a denial of service (system crash). (CVE-2015-1465)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-3.16.0-33-powerpc-e500mc | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 | |
| All of | ||
| ubuntu/linux-image-3.16.0-33-powerpc-smp | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 | |
| All of | ||
| ubuntu/linux-image-3.16.0-33-powerpc64-emb | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 | |
| All of | ||
| ubuntu/linux-image-3.16.0-33-powerpc64-smp | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 | |
| All of | ||
| ubuntu/linux-image-3.16.0-33-lowlatency | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 | |
| All of | ||
| ubuntu/linux-image-3.16.0-33-generic | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 | |
| All of | ||
| ubuntu/linux-image-3.16.0-33-generic-lpae | <3.16.0-33.44 | 3.16.0-33.44 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.10 |
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Reference Links
- https://ubuntu.com/security/CVE-2013-7421
- https://ubuntu.com/security/CVE-2014-9644
- https://ubuntu.com/security/CVE-2015-1421
- https://ubuntu.com/security/CVE-2015-1465
- https://ubuntu.com/security/notices/USN-2543-1
- https://ubuntu.com/security/notices/USN-2545-1
- https://ubuntu.com/security/notices/USN-2514-1
- https://ubuntu.com/security/notices/USN-2544-1
- https://ubuntu.com/security/notices/USN-2513-1
- https://ubuntu.com/security/notices/USN-2541-1
- https://ubuntu.com/security/notices/USN-2563-1
- https://ubuntu.com/security/notices/USN-2562-1
- https://ubuntu.com/security/notices/USN-2542-1
- https://launchpad.net/ubuntu/+source/linux/3.16.0-33.44
- https://ubuntu.com/security/notices/USN-2546-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
Frequently Asked Questions
What is the severity of USN-2546-1?
The severity of USN-2546-1 is critical due to the potential for local users to exploit the vulnerability and gain administrative privileges.
How do I fix USN-2546-1?
To fix USN-2546-1, upgrade to linux-image version 3.16.0-33.44 or later.
Which Ubuntu version is affected by USN-2546-1?
USN-2546-1 affects Ubuntu version 14.10.
What component of the system does USN-2546-1 impact?
USN-2546-1 impacts the crypto subsystem of the Linux kernel.
Can USN-2546-1 be exploited remotely?
No, USN-2546-1 requires local access to exploit the vulnerability.
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