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| author | Dave Watson <davejwatson@fb.com> | 2017-06-26 08:36:47 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-27 15:39:11 -0400 |
| commit | d97af30f615eea23ecfefd0e80b2f5f2f41afe55 (patch) | |
| tree | 1f50a7a904e2e5a42cdc548763605151f3557b0c /include/net/udp.h | |
| parent | 019b13ae85260cfab9d7ccb6ca58f094d18a24fd (diff) | |
| download | op-kernel-dev-d97af30f615eea23ecfefd0e80b2f5f2f41afe55.zip op-kernel-dev-d97af30f615eea23ecfefd0e80b2f5f2f41afe55.tar.gz | |
tcp: fix null ptr deref in getsockopt(..., TCP_ULP, ...)
If icsk_ulp_ops is unset, it dereferences a null ptr.
Add a null ptr check.
BUG: KASAN: null-ptr-deref in copy_to_user include/linux/uaccess.h:168 [inline]
BUG: KASAN: null-ptr-deref in do_tcp_getsockopt.isra.33+0x24f/0x1e30 net/ipv4/tcp.c:3057
Read of size 4 at addr 0000000000000020 by task syz-executor1/15452
Signed-off-by: Dave Watson <davejwatson@fb.com>
Reported-by: "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/udp.h')
0 files changed, 0 insertions, 0 deletions
