diff options
author | Mateusz Jurczyk <mjurczyk@google.com> | 2017-06-13 16:44:28 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-27 22:07:56 (GMT) |
commit | 244a7db0e9d584af63e1cfe4911d3200d1b180ee (patch) | |
tree | c04709e42675946d6a2ff1dee2fe88a63b3cef3a /net/core/dst_cache.c | |
parent | 4a142251a315e4df6f12a7c99a2a6dfe4ac273ec (diff) | |
download | linux-244a7db0e9d584af63e1cfe4911d3200d1b180ee.tar.xz |
NFC: Add sockaddr length checks before accessing sa_family in bind handlers
commit f6a5885fc4d68e7f25ffb42b9d8d80aebb3bacbb upstream.
Verify that the caller-provided sockaddr structure is large enough to
contain the sa_family field, before accessing it in bind() handlers of the
AF_NFC socket. Since the syscall doesn't enforce a minimum size of the
corresponding memory region, very short sockaddrs (zero or one byte long)
result in operating on uninitialized memory while referencing .sa_family.
Signed-off-by: Mateusz Jurczyk <mjurczyk@google.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core/dst_cache.c')
0 files changed, 0 insertions, 0 deletions