** Changed in: linux (Ubuntu Utopic)
Status: New => Fix Committed
** Description changed:
mm/shmem.c in the Linux kernel through 3.15.1 does not properly
implement the interaction between range notification and hole punching,
which allows local users to cause a denial of service (i_mutex hold) by
using the mmap system call to access a hole, as demonstrated by
interfering with intended shmem activity by blocking completion of (1)
an MADV_REMOVE madvise call or (2) an FALLOC_FL_PUNCH_HOLE fallocate
call.
+
+ Break-Fix: - f00cdc6df7d7cfcabb5b740911e6788cb0802bdb
+ Break-Fix: - 8e205f779d1443a94b5ae81aa359cb535dd3021e
+ Break-Fix: - b1a366500bd537b50c3aad26dc7df083ec03a448
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https://bugs.launchpad.net/bugs/1333617
Title:
CVE-2014-4171
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