CVE-2014-4655

[John Johansen]

The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not properly maintain the user_ctl_count value, which allows local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl calls.

Break-Fix: - 82262a46627bebb0febcc26664746c25cef08563

[John Johansen (jjohansen)]

CVE-2014-4655

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 2.6.32-65.131

---------------
linux (2.6.32-65.131) lucid; urgency=low

  [ Joseph Salisbury ]

  * Release Tracking Bug
    - LP: #1357394

  [ Upstream Kernel Changes ]

  * x86_32, entry: Store badsys error code in %eax
    - LP: #1334989
    - CVE-2014-4508

linux (2.6.32-65.129) lucid; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #1355445

  [ Upstream Kernel Changes ]

  * fix autofs/afs/etc. magic mountpoint breakage
    - CVE-2014-0203
  * ALSA: control: Don't access controls outside of protected regions
    - LP: #1339297
    - CVE-2014-4653
  * ALSA: control: Fix replacing user controls
    - LP: #1339303, #1339304
    - CVE-2014-4655
  * ALSA: control: Handle numid overflow
    - LP: #1339306
    - CVE-2014-4656
  * ALSA: control: Make sure that id->index does not overflow
    - LP: #1339306
    - CVE-2014-4656
  * sctp: Fix sk_ack_backlog wrap-around problem
    - LP: #1336135
    - CVE-2014-4667
  * x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
    - LP: #1334989
    - CVE-2014-4508
  * ALSA: control: Protect user controls against concurrent access
    - LP: #1339294
    - CVE-2014-4652
  * net: sctp: inherit auth_capable on INIT collisions
    - LP: #1349804
    - CVE-2014-5077
 -- Kamal Mostafa <email address hidden> Fri, 15 Aug 2014 11:22:44 -0700

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-ec2 - 2.6.32-369.85

---------------
linux-ec2 (2.6.32-369.85) lucid; urgency=low

  [ Stefan Bader ]

  * Rebased to Ubuntu-2.6.32-65.129
  * Rebased to Ubuntu-2.6.32-65.131
  * Release Tracking Bug
    - LP: #1357410

  [ Upstream Kernel Changes ]

  * xen: x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
    - LP: #1334989
    - CVE-2014-4508
  * xen: x86_32, entry: Store badsys error code in %eax
    - LP: #1334989
    - CVE-2014-4508

  [ Ubuntu: 2.6.32-65.131 ]

  * x86_32, entry: Store badsys error code in %eax
    - LP: #1334989
    - CVE-2014-4508

  [ Ubuntu: 2.6.32-65.129 ]

  * fix autofs/afs/etc. magic mountpoint breakage
    - CVE-2014-0203
  * ALSA: control: Don't access controls outside of protected regions
    - LP: #1339297
    - CVE-2014-4653
  * ALSA: control: Fix replacing user controls
    - LP: #1339303, #1339304
    - CVE-2014-4655
  * ALSA: control: Handle numid overflow
    - LP: #1339306
    - CVE-2014-4656
  * ALSA: control: Make sure that id->index does not overflow
    - LP: #1339306
    - CVE-2014-4656
  * sctp: Fix sk_ack_backlog wrap-around problem
    - CVE-2014-4667
  * x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
    - LP: #1334989
    - CVE-2014-4508
  * ALSA: control: Protect user controls against concurrent access
    - LP: #1339294
    - CVE-2014-4652
  * net: sctp: inherit auth_capable on INIT collisions
    - LP: #1349804
    - CVE-2014-5077
 -- Stefan Bader <email address hidden> Fri, 15 Aug 2014 08:55:05 +0200

[Rolf Leggewie (r0lf)]

saucy has seen the end of its life and is no longer receiving any updates. Marking the saucy task for this ticket as "Won't Fix".

[Rolf Leggewie (r0lf)]

lucid has seen the end of its life and is no longer receiving any updates. Marking the lucid task for this ticket as "Won't Fix".

[Rolf Leggewie (r0lf)]

utopic has seen the end of its life and is no longer receiving any updates. Marking the utopic task for this ticket as "Won't Fix".

[Andy Whitcroft (apw)]

This bug was nominated against a series that is no longer supported, ie vivid. The bug task representing the vivid nomination is being closed as Won't Fix.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.