Here I'm attaching a debdiff with the backported fix.

** Changed in: util-linux (Ubuntu Utopic)
     Assignee: (unassigned) => Felipe Reyes (freyes)

** Summary changed:

-  SRU: exfat not detected by blkid
+ [SRU] exfat not detected by blkid

** Patch added: "lp_1393542_utopic.debdiff"
   
https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1393542/+attachment/4347170/+files/lp_1393542_utopic.debdiff

** Changed in: util-linux (Ubuntu Utopic)
       Status: Confirmed => In Progress

** Description changed:

  [Impact]
  
  Due to a upstream bug blkid is unable to detect exfat partitions. This
  breaks proper detection and automount of exfat formatted partitions
  (e.g. SD cards or USB sticks)  in Ubuntu 14.10.
  
  [Test Case]
  
  Insert an exfat formatted SD Card (card is neither detected nor automounted)
  or
  run as root: blkid [partition]
  
+ Without the fix:
+ sudo blkid -p /dev/sde1
+ /dev/sde1: ambivalent result (probably more filesystems on the device, use 
wipefs(8) to see more details)
+ 
+ With the fix applied:
+ sudo blkid -p /dev/sde1
+ /dev/sde1: UUID="BE12-8543" VERSION="1.0" TYPE="exfat" USAGE="filesystem" 
PTTYPE="dos" PART_ENTRY_SCHEME="dos" PART_ENTRY_TYPE="0x7" 
PART_ENTRY_FLAGS="0x80" PART_ENTRY_NUMBER="1" PART_ENTRY_OFFSET="32768" 
PART_ENTRY_SIZE="124702720" PART_ENTRY_DISK="8:64" 
+ 
  [Regression Potential]
  
  None known, the bugfix is simple and part of already released upstream
  stable release (2.25.2).
  
  [Other Info]
  
  Bug reference: bug #1389021
  Upstream issue: https://github.com/karelzak/util-linux/issues/119
  Upstream bugfix commit: 
https://github.com/karelzak/util-linux/commit/98b539c25caede8534ffaf06e67a694eeb3bc6cb

** Tags added: cts

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https://bugs.launchpad.net/bugs/1393542

Title:
  [SRU] exfat not detected by blkid

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