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(parent: 78c4e17) | patch
ecryptfs: don't allow mmap when the lower fs doesn't support it
authorJeff Mahoney <jeffm@suse.com>
Tue, 5 Jul 2016 21:32:30 +0000 (17:32 -0400)
committerTyler Hicks <tyhicks@canonical.com>
Fri, 8 Jul 2016 15:35:28 +0000 (10:35 -0500)
commitf0fe970df3838c202ef6c07a4c2b36838ef0a88b
treef9556752b553050c87aef3172147f94e242778a9tree | snapshot
parent78c4e172412de5d0456dc00d2b34050aa0b683b5commit | diff
ecryptfs: don't allow mmap when the lower fs doesn't support it

There are legitimate reasons to disallow mmap on certain files, notably
in sysfs or procfs.  We shouldn't emulate mmap support on file systems
that don't offer support natively.

CVE-2016-1583

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Cc: stable@vger.kernel.org
[tyhicks: clean up f_op check by using ecryptfs_file_to_lower()]
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
fs/ecryptfs/file.c diff | blob | history
wrapfs-3.14.y