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[Bug 1438504] Re: CVE-2015-2666

 

** Also affects: linux (Ubuntu Wily)
   Importance: Medium
       Status: Fix Released

** Also affects: linux-fsl-imx51 (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-mvl-dove (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-ec2 (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-ti-omap4 (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

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

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

** Also affects: linux-armadaxp (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-quantal (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-raring (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-saucy (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-mako (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-manta (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-goldfish (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-flo (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-trusty (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-utopic (Ubuntu Wily)
   Importance: Medium
       Status: Invalid

** No longer affects: linux-lts-trusty (Ubuntu Lucid)

** No longer affects: linux-armadaxp (Ubuntu Lucid)

** No longer affects: linux-ec2 (Ubuntu Lucid)

** No longer affects: linux-goldfish (Ubuntu Lucid)

** No longer affects: linux-lts-saucy (Ubuntu Lucid)

** No longer affects: linux-lts-quantal (Ubuntu Lucid)

** No longer affects: linux-mvl-dove (Ubuntu Lucid)

** No longer affects: linux-ti-omap4 (Ubuntu Lucid)

** No longer affects: linux-lts-vivid (Ubuntu Lucid)

** No longer affects: linux (Ubuntu Lucid)

** No longer affects: linux-mako (Ubuntu Lucid)

** No longer affects: linux-fsl-imx51 (Ubuntu Lucid)

** No longer affects: linux-lts-utopic (Ubuntu Lucid)

** No longer affects: linux-flo (Ubuntu Lucid)

** No longer affects: linux-lts-raring (Ubuntu Lucid)

** No longer affects: linux-manta (Ubuntu Lucid)

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

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

** Changed in: linux-lts-vivid (Ubuntu Vivid)
       Status: New => Invalid

** Changed in: linux-lts-vivid (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-lts-vivid (Ubuntu Wily)
       Status: New => Invalid

** Changed in: linux-lts-vivid (Ubuntu Wily)
   Importance: Undecided => Medium

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

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

** Changed in: linux-lts-vivid (Ubuntu Trusty)
       Status: New => Fix Committed

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

** Description changed:

- [execution in the early microcode loader x86/intel]
- Guard against stack overflow in the loader
- mc_saved_tmp is a static array allocated on the stack, we need to make sure mc_saved_count stays within its bounds, otherwise we're overflowing the stack in _save_mc(). A specially crafted microcode header could lead to a kernel crash or potentially kernel execution.
+ [execution in the early microcode loader x86/intel] Guard against stack
+ overflow in the loader mc_saved_tmp is a static array allocated on the
+ stack, we need to make sure mc_saved_count stays within its bounds,
+ otherwise we're overflowing the stack in _save_mc(). A specially crafted
+ microcode header could lead to a kernel crash or potentially kernel
+ execution.
  
  Break-Fix: ec400ddeff200b068ddc6c70f7321f49ecf32ed5
  f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-armadaxp in Ubuntu.
https://bugs.launchpad.net/bugs/1438504

Title:
  CVE-2015-2666

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:
  Invalid
Status in linux-fsl-imx51 package in Ubuntu:
  Invalid
Status in linux-goldfish 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-lts-vivid package in Ubuntu:
  Invalid
Status in linux-mako package in Ubuntu:
  Invalid
Status in linux-manta 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-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:
  Invalid
Status in linux-armadaxp source package in Precise:
  Invalid
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:
  Invalid
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:
  Invalid
Status in linux-fsl-imx51 source package in Utopic:
  Invalid
Status in linux-goldfish 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-lts-vivid source package in Utopic:
  Invalid
Status in linux-mako source package in Utopic:
  Invalid
Status in linux-manta 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:
  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:
  Invalid
Status in linux-fsl-imx51 source package in Vivid:
  Invalid
Status in linux-goldfish 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-lts-vivid source package in Vivid:
  Invalid
Status in linux-mako source package in Vivid:
  Invalid
Status in linux-manta 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
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:
  Invalid
Status in linux-fsl-imx51 source package in Wily:
  Invalid
Status in linux-goldfish source package in Wily:
  Invalid
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:
  Invalid
Status in linux-manta source package in Wily:
  Invalid
Status in linux-mvl-dove source package in Wily:
  Invalid
Status in linux-ti-omap4 source package in Wily:
  Invalid

Bug description:
  [execution in the early microcode loader x86/intel] Guard against
  stack overflow in the loader mc_saved_tmp is a static array allocated
  on the stack, we need to make sure mc_saved_count stays within its
  bounds, otherwise we're overflowing the stack in _save_mc(). A
  specially crafted microcode header could lead to a kernel crash or
  potentially kernel execution.

  Break-Fix: ec400ddeff200b068ddc6c70f7321f49ecf32ed5
  f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4

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References