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[Bug 1395189] Re: CVE-2014-8989

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: John Johansen <john.johansen@xxxxxxxxxxxxx>
Date: Fri, 09 Jan 2015 14:32:25 -0000
Reply-to: Bug 1395189 <1395189@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Changed in: linux-lts-raring (Ubuntu Precise)
       Status: New => Invalid

** Description changed:

  The Linux kernel through 3.17.4 does not properly restrict dropping of
  supplemental group memberships in certain namespace scenarios, which
  allows local users to bypass intended file permissions by leveraging a
  POSIX ACL containing an entry for the group category that is more
  restrictive than the entry for the other category, aka a "negative
  groups" issue, related to kernel/groups.c, kernel/uid16.c, and
  kernel/user_namespace.c.
+ 
+ Break-Fix: - 273d2c67c3e179adb1e74f403d1e9a06e3f841b5
+ Break-Fix: - be7c6dba2332cef0677fbabb606e279ae76652c3
+ Break-Fix: - 80dd00a23784b384ccea049bfb3f259d3f973b9d
+ Break-Fix: - f95d7918bd1e724675de4940039f2865e5eec5fe

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https://bugs.launchpad.net/bugs/1395189

Title:
  CVE-2014-8989

Status in linux package in Ubuntu:
  New
Status in linux-armadaxp package in Ubuntu:
  Invalid
Status in linux-ec2 package in Ubuntu:
  Invalid
Status in linux-fsl-imx51 package in Ubuntu:
  Invalid
Status in linux-lts-backport-maverick package in Ubuntu:
  New
Status in linux-lts-backport-natty package in Ubuntu:
  New
Status in linux-lts-quantal package in Ubuntu:
  Invalid
Status in linux-lts-raring package in Ubuntu:
  Invalid
Status in linux-lts-saucy package in Ubuntu:
  Invalid
Status in linux-lts-trusty package in Ubuntu:
  Invalid
Status in linux-lts-utopic package in Ubuntu:
  Invalid
Status in linux-mvl-dove package in Ubuntu:
  Invalid
Status in linux-ti-omap4 package in Ubuntu:
  Invalid
Status in linux source package in Lucid:
  New
Status in linux-armadaxp source package in Lucid:
  Invalid
Status in linux-ec2 source package in Lucid:
  New
Status in linux-fsl-imx51 source package in Lucid:
  Invalid
Status in linux-lts-backport-maverick source package in Lucid:
  New
Status in linux-lts-backport-natty source package in Lucid:
  New
Status in linux-lts-quantal source package in Lucid:
  Invalid
Status in linux-lts-raring source package in Lucid:
  Invalid
Status in linux-lts-saucy source package in Lucid:
  Invalid
Status in linux-lts-trusty source package in Lucid:
  Invalid
Status in linux-lts-utopic source package in Lucid:
  Invalid
Status in linux-mvl-dove source package in Lucid:
  Invalid
Status in linux-ti-omap4 source package in Lucid:
  Invalid
Status in linux source package in Precise:
  New
Status in linux-armadaxp source package in Precise:
  New
Status in linux-ec2 source package in Precise:
  Invalid
Status in linux-fsl-imx51 source package in Precise:
  Invalid
Status in linux-lts-backport-maverick source package in Precise:
  New
Status in linux-lts-backport-natty source package in Precise:
  New
Status in linux-lts-quantal source package in Precise:
  New
Status in linux-lts-raring source package in Precise:
  Invalid
Status in linux-lts-saucy source package in Precise:
  New
Status in linux-lts-trusty source package in Precise:
  New
Status in linux-lts-utopic source package in Precise:
  Invalid
Status in linux-mvl-dove source package in Precise:
  Invalid
Status in linux-ti-omap4 source package in Precise:
  New
Status in linux source package in Trusty:
  New
Status in linux-armadaxp source package in Trusty:
  Invalid
Status in linux-ec2 source package in Trusty:
  Invalid
Status in linux-fsl-imx51 source package in Trusty:
  Invalid
Status in linux-lts-backport-maverick source package in Trusty:
  New
Status in linux-lts-backport-natty source package in Trusty:
  New
Status in linux-lts-quantal source package in Trusty:
  Invalid
Status in linux-lts-raring source package in Trusty:
  Invalid
Status in linux-lts-saucy source package in Trusty:
  Invalid
Status in linux-lts-trusty source package in Trusty:
  Invalid
Status in linux-lts-utopic source package in Trusty:
  New
Status in linux-mvl-dove source package in Trusty:
  Invalid
Status in linux-ti-omap4 source package in Trusty:
  Invalid
Status in linux source package in Utopic:
  New
Status in linux-armadaxp source package in Utopic:
  Invalid
Status in linux-ec2 source package in Utopic:
  Invalid
Status in linux-fsl-imx51 source package in Utopic:
  Invalid
Status in linux-lts-backport-maverick source package in Utopic:
  New
Status in linux-lts-backport-natty source package in Utopic:
  New
Status in linux-lts-quantal source package in Utopic:
  Invalid
Status in linux-lts-raring source package in Utopic:
  Invalid
Status in linux-lts-saucy source package in Utopic:
  Invalid
Status in linux-lts-trusty source package in Utopic:
  Invalid
Status in linux-lts-utopic source package in Utopic:
  Invalid
Status in linux-mvl-dove source package in Utopic:
  Invalid
Status in linux-ti-omap4 source package in Utopic:
  Invalid
Status in linux source package in Vivid:
  New
Status in linux-armadaxp source package in Vivid:
  Invalid
Status in linux-ec2 source package in Vivid:
  Invalid
Status in linux-fsl-imx51 source package in Vivid:
  Invalid
Status in linux-lts-backport-maverick source package in Vivid:
  New
Status in linux-lts-backport-natty source package in Vivid:
  New
Status in linux-lts-quantal source package in Vivid:
  Invalid
Status in linux-lts-raring source package in Vivid:
  Invalid
Status in linux-lts-saucy source package in Vivid:
  Invalid
Status in linux-lts-trusty source package in Vivid:
  Invalid
Status in linux-lts-utopic source package in Vivid:
  Invalid
Status in linux-mvl-dove source package in Vivid:
  Invalid
Status in linux-ti-omap4 source package in Vivid:
  Invalid

Bug description:
  The Linux kernel through 3.17.4 does not properly restrict dropping of
  supplemental group memberships in certain namespace scenarios, which
  allows local users to bypass intended file permissions by leveraging a
  POSIX ACL containing an entry for the group category that is more
  restrictive than the entry for the other category, aka a "negative
  groups" issue, related to kernel/groups.c, kernel/uid16.c, and
  kernel/user_namespace.c.

  Break-Fix: - 273d2c67c3e179adb1e74f403d1e9a06e3f841b5
  Break-Fix: - be7c6dba2332cef0677fbabb606e279ae76652c3
  Break-Fix: - 80dd00a23784b384ccea049bfb3f259d3f973b9d
  Break-Fix: - f95d7918bd1e724675de4940039f2865e5eec5fe

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References

[Bug 1395189] [NEW] CVE-2014-8989
From: John Johansen, 2014-11-21