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(parent: 9395452) | patch
ovl: copy_up_xattr(): use strnlen
authorMiklos Szeredi <mszeredi@redhat.com>
Fri, 16 Sep 2016 12:12:11 +0000 (14:12 +0200)
committerMiklos Szeredi <mszeredi@redhat.com>
Fri, 16 Sep 2016 12:12:11 +0000 (14:12 +0200)
commit8b326c61de08f5ca4bc454a168f19e7e43c4cc2a
treeeb3d11705f81fa3627796dca0fdee18296790704tree | snapshot
parent9395452b4aab7bc2475ef8935b4a4fb99d778d70commit | diff
ovl: copy_up_xattr(): use strnlen

Be defensive about what underlying fs provides us in the returned xattr
list buffer.  strlen() may overrun the buffer, so use strnlen() and WARN if
the contents are not properly null terminated.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org>
fs/overlayfs/copy_up.c diff | blob | history
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