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| author | Michael Brown | 2012-05-08 13:47:51 +0200 |
|---|---|---|
| committer | Michael Brown | 2012-05-08 13:49:01 +0200 |
| commit | 52dd4bacadb1ec45ecc66abe4ee6bd17fe07e66f (patch) | |
| tree | a64bfdfe2c1777246a6ccea9b36172ac61915594 /src/net/tcp.c | |
| parent | [test] Add self-tests for crc32_le() (diff) | |
| download | ipxe-52dd4bacadb1ec45ecc66abe4ee6bd17fe07e66f.tar.gz ipxe-52dd4bacadb1ec45ecc66abe4ee6bd17fe07e66f.tar.xz ipxe-52dd4bacadb1ec45ecc66abe4ee6bd17fe07e66f.zip | |
[tcp] Fix potential NULL pointer dereference
Detected using Valgrind.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Diffstat (limited to 'src/net/tcp.c')
| -rw-r--r-- | src/net/tcp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/net/tcp.c b/src/net/tcp.c index 0a7924a7..5a9810b2 100644 --- a/src/net/tcp.c +++ b/src/net/tcp.c @@ -1143,7 +1143,7 @@ static int tcp_rx ( struct io_buffer *iobuf, flags = tcphdr->flags; tcp_rx_opts ( tcp, ( ( ( void * ) tcphdr ) + sizeof ( *tcphdr ) ), ( hlen - sizeof ( *tcphdr ) ), &options ); - if ( options.tsopt ) + if ( tcp && options.tsopt ) tcp->ts_val = ntohl ( options.tsopt->tsval ); iob_pull ( iobuf, hlen ); len = iob_len ( iobuf ); |