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| author | Mateusz Jurczyk <mjurczyk@google.com> | 2017-06-23 20:32:28 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-25 18:42:58 +0300 |
| commit | e3c42b61ff813921ba58cfc0019e3fd63f651190 (patch) | |
| tree | ee58efff6351bd05c142d03fe1a4e8f1b10afdab /kernel/uid16.c | |
| parent | 2e56c26b391810461170547509649f0c11717f65 (diff) | |
| download | linux-e3c42b61ff813921ba58cfc0019e3fd63f651190.tar.xz | |
af_iucv: Move sockaddr length checks to before accessing sa_family in bind and connect handlers
Verify that the caller-provided sockaddr structure is large enough to
contain the sa_family field, before accessing it in bind() and connect()
handlers of the AF_IUCV socket. Since neither syscall enforces 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.
Fixes: 52a82e23b9f2 ("af_iucv: Validate socket address length in iucv_sock_bind()")
Signed-off-by: Mateusz Jurczyk <mjurczyk@google.com>
[jwi: removed unneeded null-check for addr]
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/uid16.c')
0 files changed, 0 insertions, 0 deletions