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[Bug 1383358] Re: CVE-2014-7975

 

CVE-2014-7975

** Also affects: linux (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-fsl-imx51 (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-mvl-dove (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-ec2 (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-ti-omap4 (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-maverick (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-natty (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-fsl-imx51 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-mvl-dove (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-ec2 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-ti-omap4 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-maverick (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-natty (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux-fsl-imx51 (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux-mvl-dove (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux-ec2 (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux-ti-omap4 (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-maverick (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-natty (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Also affects: linux-fsl-imx51 (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Also affects: linux-mvl-dove (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Also affects: linux-ec2 (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Also affects: linux-ti-omap4 (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-maverick (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-natty (Ubuntu Lucid)
   Importance: Undecided
       Status: New

** Changed in: linux-armadaxp (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-armadaxp (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-armadaxp (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-ec2 (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-ec2 (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-ec2 (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-lts-quantal (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-lts-quantal (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-lts-quantal (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-mvl-dove (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-mvl-dove (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-mvl-dove (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-lts-saucy (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-lts-saucy (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-lts-saucy (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-ti-omap4 (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-ti-omap4 (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-ti-omap4 (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-fsl-imx51 (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-fsl-imx51 (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-fsl-imx51 (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-lts-raring (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-lts-raring (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-lts-raring (Ubuntu Trusty)
       Status: New => Invalid

** Description changed:

- Placeholder
+ The do_umount function in fs/namespace.c in the Linux kernel through
+ 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb
+ calls that change the root filesystem to read-only, which allows local
+ users to cause a denial of service (loss of writability) by making
+ certain unshare system calls, clearing the / MNT_LOCKED flag, and making
+ an MNT_FORCE umount system call.
+ 
+ Break-Fix: - a1480dcc3c706e309a88884723446f2e84fedd5b

** Changed in: linux-armadaxp (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-armadaxp (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-armadaxp (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-armadaxp (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-ec2 (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-ec2 (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-ec2 (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-ec2 (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-lts-quantal (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-lts-quantal (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-lts-quantal (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-lts-quantal (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-mvl-dove (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-mvl-dove (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-mvl-dove (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-mvl-dove (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-mvl-dove (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-lts-saucy (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-lts-saucy (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-lts-saucy (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-lts-saucy (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-fsl-imx51 (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-fsl-imx51 (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-fsl-imx51 (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-fsl-imx51 (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-fsl-imx51 (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-lts-raring (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-lts-raring (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-lts-raring (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-lts-raring (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-lts-raring (Ubuntu Trusty)
   Importance: Undecided => Medium

-- 
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https://bugs.launchpad.net/bugs/1383358

Title:
  CVE-2014-7975

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-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-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-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-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-mvl-dove” source package in Utopic:
  Invalid
Status in “linux-ti-omap4” source package in Utopic:
  Invalid

Bug description:
  The do_umount function in fs/namespace.c in the Linux kernel through
  3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb
  calls that change the root filesystem to read-only, which allows local
  users to cause a denial of service (loss of writability) by making
  certain unshare system calls, clearing the / MNT_LOCKED flag, and
  making an MNT_FORCE umount system call.

  Break-Fix: - a1480dcc3c706e309a88884723446f2e84fedd5b

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References