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| author | Marcel Holtmann <marcel@holtmann.org> | 2007-05-05 00:35:59 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2007-05-05 00:35:59 +0200 |
| commit | 0878b6667f28772aa7d6b735abff53efc7bf6d91 (patch) | |
| tree | 5a1dbfb35f679335fbec4cbd17dfe64926db7750 /net/appletalk | |
| parent | dc87c3985e9b442c60994308a96f887579addc39 (diff) | |
| download | blackbird-op-linux-0878b6667f28772aa7d6b735abff53efc7bf6d91.tar.gz blackbird-op-linux-0878b6667f28772aa7d6b735abff53efc7bf6d91.zip | |
[Bluetooth] Fix L2CAP and HCI setsockopt() information leaks
The L2CAP and HCI setsockopt() implementations have a small information
leak that makes it possible to leak kernel stack memory to userspace.
If the optlen parameter is 0, no data will be copied by copy_from_user(),
but the uninitialized stack buffer will be read and stored later. A call
to getsockopt() can now retrieve the leaked information.
To fix this problem the stack buffer given to copy_from_user() must be
initialized with the current settings.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/appletalk')
0 files changed, 0 insertions, 0 deletions
