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| author |   Mateusz Jurczyk <mjurczyk@google.com> | 2017-06-13 18:44:28 +0200 |
|---|---|---|
| committer |   Samuel Ortiz <sameo@linux.intel.com> | 2017-06-23 00:38:31 +0200 |
| commit | f6a5885fc4d68e7f25ffb42b9d8d80aebb3bacbb (patch) | |
| tree | 829ed516b1f0f3eb98c27cebeaca12eaa11664f6 /drivers/nfc | |
| parent | NFC: add NULL checks to avoid potential NULL pointer dereference (diff) | |
| download | linux-dev-f6a5885fc4d68e7f25ffb42b9d8d80aebb3bacbb.tar.xz linux-dev-f6a5885fc4d68e7f25ffb42b9d8d80aebb3bacbb.zip | |
NFC: Add sockaddr length checks before accessing sa_family in bind handlers
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>
Diffstat (limited to 'drivers/nfc')
0 files changed, 0 insertions, 0 deletions