USN-1876-1: Linux kernel vulnerabilities

Published Jun 14, 2013
·
Updated

Andrew Honig reported a flaw in the way KVM (Kernel-based Virtual Machine) emulated the IOAPIC. A privileged guest user could exploit this flaw to read host memory or cause a denial of service (crash the host). (CVE-2013-1798) An information leak was discovered in the Linux kernel's rcvmsg path for ATM (Asynchronous Transfer Mode). A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3222) An information leak was discovered in the Linux kernel's recvmsg path for ax25 address family. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3223) An information leak was discovered in the Linux kernel's recvmsg path for the bluetooth address family. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3224) An information leak was discovered in the Linux kernel's bluetooth rfcomm protocol support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3225) An information leak was discovered in the Linux kernel's IRDA (infrared) support subsystem. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3228) An information leak was discovered in the Linux kernel's s390 - z/VM support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3229) An information leak was discovered in the Linux kernel's llc (Logical Link Layer 2) support. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3231) An information leak was discovered in the Linux kernel's receive message handling for the netrom address family. A local user could exploit this flaw to obtain sensitive information from the kernel's stack memory. (CVE-2013-3232) An information leak was discovered in the Linux kernel's Rose X.25 protocol layer. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3234) An information leak was discovered in the Linux kernel's TIPC (Transparent Inter Process Communication) protocol implementation. A local user could exploit this flaw to examine potentially sensitive information from the kernel's stack memory. (CVE-2013-3235)

Affected Software

28 affected componentsFixes available
All of the following
ubuntu/linux-image-2.6.32-48-powerpc-smp<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-versatile<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-server<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-powerpc64-smp<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-lpia<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-386<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-generic-pae<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-sparc64-smp<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-preempt<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-sparc64<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-ia64<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-virtual<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-generic<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04
All of the following
ubuntu/linux-image-2.6.32-48-powerpc<2.6.32-48.110
2.6.32-48.110
Ubuntu Ubuntu=10.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-powerpc-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  2. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-versatile to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  3. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-server to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  4. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-powerpc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  5. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-lpia to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  6. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-386 to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  7. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-generic-pae to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  8. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-sparc64-smp to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  9. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-preempt to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  10. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-sparc64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  11. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-ia64 to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  12. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-virtual to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  13. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-generic to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110
  14. Upgrade

    Upgrade ubuntu/linux-image-2.6.32-48-powerpc to a version that resolves this vulnerability.

    Fixed in 2.6.32-48.110

Event History

Jun 14, 2013
Advisory Published
via Ubuntu·12:00 AM

Frequently Asked Questions

1

What is the severity of USN-1876-1?

USN-1876-1 is considered a high severity vulnerability due to its potential for information leakage and denial of service.

2

How do I fix USN-1876-1?

To mitigate the vulnerability identified in USN-1876-1, upgrade to the linux-image packages version 2.6.32-48.110 or later.

3

Who is affected by USN-1876-1?

USN-1876-1 affects users of Ubuntu 10.04 using specific linux-image packages, including but not limited to linux-image-2.6.32-48-server and linux-image-2.6.32-48-generic.

4

What causes USN-1876-1 vulnerability?

The USN-1876-1 vulnerability arises from a flaw in the Kernel-based Virtual Machine's emulation of the IOAPIC, allowing a privileged guest user to exploit host memory.

5

Is there a workaround for USN-1876-1?

There is no recommended workaround; the best action is to apply the official fix by upgrading the affected packages.

Contact

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