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| author | Tomas Bortoli <tomasbortoli@gmail.com> | 2018-07-23 17:44:04 +0200 |
|---|---|---|
| committer | Dominique Martinet <dominique.martinet@cea.fr> | 2018-08-13 02:34:58 +0200 |
| commit | f984579a01d85166ee7380204a96d978a67687a1 (patch) | |
| tree | 6921952e63cd2ec0cb11625de49fb4395e0d4ce4 /net/9p/trans_rdma.c | |
| parent | net/9p/trans_fd.c: fix race by holding the lock (diff) | |
| download | linux-f984579a01d85166ee7380204a96d978a67687a1.tar.xz linux-f984579a01d85166ee7380204a96d978a67687a1.zip | |
9p: validate PDU length
This commit adds length check for the PDU size.
The size contained in the header has to match the actual size,
except for TCP (trans_fd.c) where actual length is not known ahead
and the header's length will be checked only against the validity
range.
Link: http://lkml.kernel.org/r/20180723154404.2406-1-tomasbortoli@gmail.com
Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com>
Reported-by: syzbot+65c6b72f284a39d416b4@syzkaller.appspotmail.com
To: Eric Van Hensbergen <ericvh@gmail.com>
To: Ron Minnich <rminnich@sandia.gov>
To: Latchesar Ionkov <lucho@ionkov.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Diffstat (limited to 'net/9p/trans_rdma.c')
| -rw-r--r-- | net/9p/trans_rdma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c index 3d414acb7015..2649b2ebf961 100644 --- a/net/9p/trans_rdma.c +++ b/net/9p/trans_rdma.c @@ -320,6 +320,7 @@ recv_done(struct ib_cq *cq, struct ib_wc *wc) if (wc->status != IB_WC_SUCCESS) goto err_out; + c->rc->size = wc->byte_len; err = p9_parse_header(c->rc, NULL, NULL, &tag, 1); if (err) goto err_out; |