Advisory Published

USN-1805-1: Linux kernel vulnerabilities

First published: Fri Apr 19 2013(Updated: )

Mathias Krause discovered an information leak in the Linux kernel's getsockname implementation for Logical Link Layer (llc) sockets. A local user could exploit this flaw to examine some of the kernel's stack memory. (CVE-2012-6542) Mathias Krause discovered information leaks in the Linux kernel's Bluetooth Logical Link Control and Adaptation Protocol (L2CAP) implementation. A local user could exploit these flaws to examine some of the kernel's stack memory. (CVE-2012-6544) Mathias Krause discovered information leaks in the Linux kernel's Bluetooth RFCOMM protocol implementation. A local user could exploit these flaws to examine parts of kernel memory. (CVE-2012-6545) Mathias Krause discovered information leaks in the Linux kernel's Asynchronous Transfer Mode (ATM) networking stack. A local user could exploit these flaws to examine some parts of kernel memory. (CVE-2012-6546) Mathias Krause discovered an information leak in the Linux kernel's UDF file system implementation. A local user could exploit this flaw to examine some of the kernel's heap memory. (CVE-2012-6548) Andrew Jones discovered a flaw with the xen_iret function in Linux kernel's Xen virtualizeation. In the 32-bit Xen paravirt platform an unprivileged guest OS user could exploit this flaw to cause a denial of service (crash the system) or gain guest OS privilege. (CVE-2013-0228) An information leak was discovered in the Linux kernel's Bluetooth stack when HIDP (Human Interface Device Protocol) support is enabled. A local unprivileged user could exploit this flaw to cause an information leak from the kernel. (CVE-2013-0349) A flaw was discovered in the Edgeort USB serial converter driver when the device is disconnected while it is in use. A local user could exploit this flaw to cause a denial of service (system crash). (CVE-2013-1774) Andrew Honig discovered a flaw in guest OS time updates in the Linux kernel's KVM (Kernel-based Virtual Machine). A privileged guest user could exploit this flaw to cause a denial of service (crash host system) or potential escalate privilege to the host kernel level. (CVE-2013-1796)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-2.6.32-46-sparc64<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-generic<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-virtual<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-powerpc<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-generic-pae<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-powerpc64-smp<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-preempt<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-server<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-lpia<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-ia64<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-versatile<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-powerpc-smp<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-386<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04
All of
ubuntu/linux-image-2.6.32-46-sparc64-smp<2.6.32-46.108
2.6.32-46.108
Ubuntu 22.04 LTS=10.04

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Reference Links

Frequently Asked Questions

  • What is the severity of USN-1805-1?

    USN-1805-1 is classified as a medium severity vulnerability due to the potential for local information disclosure.

  • How do I fix USN-1805-1?

    To remediate USN-1805-1, users should upgrade to the linux-image packages version 2.6.32-46.108 or later for Ubuntu 10.04.

  • What systems are affected by USN-1805-1?

    USN-1805-1 affects several linux-image packages on Ubuntu 10.04, including generic, virtual, and server versions.

  • Who discovered the vulnerability in USN-1805-1?

    Mathias Krause discovered the information leak vulnerability described in USN-1805-1.

  • Is USN-1805-1 related to CVE-2012-6542?

    Yes, USN-1805-1 addresses CVE-2012-6542, which involves an information leak in the getsockname implementation for Logical Link Layer sockets.

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