numactl crashes with segfault

Do you know if a CVE has been assigned to this issue? I don't directly see how it could be used to cross privilege boundaries. Is there something I've missed?

Thanks

A CVE hasn't been assigned.

Presumably an attacker could manipulate the environment before an application's libnuma call to have the uninitialised pointer point to information in memory they'd like to extract, or cause a denial.

If an application that gained privileges (capabilities, setuid etc) uses libnuma, this may allow access to move privileged data.

That said, probably it would only be libvirt:

$ apt-cache rdepends libnuma1
libnuma1
Reverse Depends:
  libvirt0
  libvirt-bin
  libhwloc5
  libvirt0
  libvirt-bin
  libnuma1:i386
  libnuma1:i386
  crafty
  rt-tests
  procenv
  numactl
  libhwloc5
  libvirt0
  libvirt-bin
  libnuma-dev
  libnuma-dbg
  irqbalance

I've attached the debdiff with the fix.

The attachment "debdiff with upstream fix" seems to be a debdiff. The ubuntu-sponsors team has been subscribed to the bug report so that they can review and hopefully sponsor the debdiff. If the attachment isn't a patch, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are member of the ~ubuntu-sponsors, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issue please contact him.]

I took the liberty to add a cdbs patch (as that's what the source package is using), find the resulting debdiff here: http://paste.ubuntu.com/10790767/

I uploaded it and it's sitting in the release team's review queue.

This bug was fixed in the package numactl - 2.0.10-1ubuntu2

---------------
numactl (2.0.10-1ubuntu2) vivid; urgency=medium

  * d/patches/from-git-6a7c2cf3-fix-uninitialised-mask.patch: Fix libnuma SEGV
    due to uninitialised mask. (LP: #1441388)
 -- Daniel J Blueman <email address hidden> Wed, 08 Apr 2015 05:30:55 +0200

Hello Daniel, or anyone else affected,

Accepted numactl into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/numactl/2.0.9~rc5-1ubuntu3.14.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Hello Daniel, or anyone else affected,

Accepted numactl into utopic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/numactl/2.0.9~rc5-1ubuntu3.14.10.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

I have tested both the 14.04 and 14.10 packages [1], and they work great.

Splendid work, Chris!

-- [1]

http://archive.ubuntu.com/ubuntu/pool/universe/n/numactl/numactl_2.0.9~rc5-1ubuntu3.14.04.1_amd64.deb
http://archive.ubuntu.com/ubuntu/pool/universe/n/numactl/numactl_2.0.9~rc5-1ubuntu3.14.10.1_amd64.deb

This bug was fixed in the package numactl - 2.0.9~rc5-1ubuntu3.14.10.1

---------------
numactl (2.0.9~rc5-1ubuntu3.14.10.1) utopic-proposed; urgency=medium

  * d/p/libnuma-ppc64el-cpu-number-not-contiguous - patch from Thierry FAUCK
    (LP: #1358835)
  * d/patches/from-git-6a7c2cf3-fix-uninitialised-mask.patch: Fix libnuma SEGV
    due to uninitialised mask. (LP: #1441388)
  * d/rules: include simple-patchsys.mk to get patches applied

 -- Serge Hallyn <email address hidden> Thu, 21 May 2015 15:30:52 -0700

The verification of the Stable Release Update for numactl has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package numactl - 2.0.9~rc5-1ubuntu3.14.04.1

---------------
numactl (2.0.9~rc5-1ubuntu3.14.04.1) trusty-proposed; urgency=medium

  * d/p/libnuma-ppc64el-cpu-number-not-contiguous - patch from Thierry FAUCK
    (LP: #1358835)
  * d/patches/from-git-6a7c2cf3-fix-uninitialised-mask.patch: Fix libnuma SEGV
    due to uninitialised mask. (LP: #1441388)
  * d/rules: include simple-patchsys.mk to get patches applied

 -- Serge Hallyn <email address hidden> Thu, 21 May 2015 15:43:11 -0700