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[Bug 1447373] Re: CVE-2015-3339

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: John Johansen <john.johansen@xxxxxxxxxxxxx>
Date: Fri, 05 Jun 2015 00:07:20 -0000
Reply-to: Bug 1447373 <1447373@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Description changed:

- [chown() was racy relative to execve()]
+ Race condition in the prepare_binprm function in fs/exec.c in the Linux
+ kernel before 3.19.6 allows local users to gain privileges by executing
+ a setuid program at a time instant when a chown to root is in progress,
+ and the ownership is changed but the setuid bit is not yet stripped.
  
  Break-Fix: - 8b01fc86b9f425899f8a3a8fc1c47d73c2c20543

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https://bugs.launchpad.net/bugs/1447373

Title:
  CVE-2015-3339

Status in linux package in Ubuntu:
  Fix Released
Status in linux-armadaxp package in Ubuntu:
  Invalid
Status in linux-ec2 package in Ubuntu:
  Invalid
Status in linux-flo package in Ubuntu:
  New
Status in linux-fsl-imx51 package in Ubuntu:
  Invalid
Status in linux-goldfish package in Ubuntu:
  New
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-lts-vivid package in Ubuntu:
  Invalid
Status in linux-mako package in Ubuntu:
  New
Status in linux-manta package in Ubuntu:
  New
Status in linux-mvl-dove package in Ubuntu:
  Invalid
Status in linux-ti-omap4 package in Ubuntu:
  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 source package in Precise:
  Fix Released
Status in linux-armadaxp source package in Precise:
  Fix Released
Status in linux-ec2 source package in Precise:
  Invalid
Status in linux-flo source package in Precise:
  Invalid
Status in linux-fsl-imx51 source package in Precise:
  Invalid
Status in linux-goldfish 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:
  Invalid
Status in linux-lts-raring source package in Precise:
  Invalid
Status in linux-lts-saucy source package in Precise:
  Invalid
Status in linux-lts-trusty source package in Precise:
  Fix Released
Status in linux-lts-utopic source package in Precise:
  Invalid
Status in linux-lts-vivid source package in Precise:
  Invalid
Status in linux-mako source package in Precise:
  Invalid
Status in linux-manta source package in Precise:
  Invalid
Status in linux-mvl-dove source package in Precise:
  Invalid
Status in linux-ti-omap4 source package in Precise:
  Fix Released
Status in linux source package in Trusty:
  Fix Released
Status in linux-armadaxp source package in Trusty:
  Invalid
Status in linux-ec2 source package in Trusty:
  Invalid
Status in linux-flo source package in Trusty:
  Invalid
Status in linux-fsl-imx51 source package in Trusty:
  Invalid
Status in linux-goldfish 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:
  Fix Released
Status in linux-lts-vivid source package in Trusty:
  Fix Committed
Status in linux-mako source package in Trusty:
  Invalid
Status in linux-manta source package in Trusty:
  Invalid
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:
  Fix Released
Status in linux-armadaxp source package in Utopic:
  Invalid
Status in linux-ec2 source package in Utopic:
  Invalid
Status in linux-flo source package in Utopic:
  New
Status in linux-fsl-imx51 source package in Utopic:
  Invalid
Status in linux-goldfish source package in Utopic:
  New
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-lts-vivid source package in Utopic:
  Invalid
Status in linux-mako source package in Utopic:
  New
Status in linux-manta source package in Utopic:
  New
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:
  Fix Released
Status in linux-armadaxp source package in Vivid:
  Invalid
Status in linux-ec2 source package in Vivid:
  Invalid
Status in linux-flo source package in Vivid:
  New
Status in linux-fsl-imx51 source package in Vivid:
  Invalid
Status in linux-goldfish source package in Vivid:
  New
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-lts-vivid source package in Vivid:
  Invalid
Status in linux-mako source package in Vivid:
  New
Status in linux-manta source package in Vivid:
  New
Status in linux-mvl-dove source package in Vivid:
  Invalid
Status in linux-ti-omap4 source package in Vivid:
  Invalid
Status in linux source package in Wily:
  Fix Released
Status in linux-armadaxp source package in Wily:
  Invalid
Status in linux-ec2 source package in Wily:
  Invalid
Status in linux-flo source package in Wily:
  New
Status in linux-fsl-imx51 source package in Wily:
  Invalid
Status in linux-goldfish source package in Wily:
  New
Status in linux-lts-backport-maverick source package in Wily:
  New
Status in linux-lts-backport-natty source package in Wily:
  New
Status in linux-lts-quantal source package in Wily:
  Invalid
Status in linux-lts-raring source package in Wily:
  Invalid
Status in linux-lts-saucy source package in Wily:
  Invalid
Status in linux-lts-trusty source package in Wily:
  Invalid
Status in linux-lts-utopic source package in Wily:
  Invalid
Status in linux-lts-vivid source package in Wily:
  Invalid
Status in linux-mako source package in Wily:
  New
Status in linux-manta source package in Wily:
  New
Status in linux-mvl-dove source package in Wily:
  Invalid
Status in linux-ti-omap4 source package in Wily:
  Invalid

Bug description:
  Race condition in the prepare_binprm function in fs/exec.c in the
  Linux kernel before 3.19.6 allows local users to gain privileges by
  executing a setuid program at a time instant when a chown to root is
  in progress, and the ownership is changed but the setuid bit is not
  yet stripped.

  Break-Fix: - 8b01fc86b9f425899f8a3a8fc1c47d73c2c20543

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References

[Bug 1447373] [NEW] CVE-2015-3339
From: John Johansen, 2015-04-22