ext4: add bounds checking to ext4_xattr_find_entry()

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commit 9496005d6c upstream.

Add some paranoia checks to make sure we don't stray beyond the end of
the valid memory region containing ext4 xattr entries while we are
scanning for a match.

Also rename the function to xattr_find_entry() since it is static and
thus only used in fs/ext4/xattr.c

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Theodore Ts'o 2018-03-30 20:00:56 -04:00 • committed by Greg Kroah-Hartman

parent 598e04ae2f

commit 9703952178

1 changed files with 17 additions and 11 deletions

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fs/ext4/xattr.c

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