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| author | Ayush Sawal <ayush.sawal@chelsio.com> | 2021-01-06 09:59:11 +0530 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-07 17:06:02 -0800 |
| commit | eade1e0a4fb31d48eeb1589d9bb859ae4dd6181d (patch) | |
| tree | 93b01c5cf2261ebe22f652ae2e554b0e9afb6c5c | |
| parent | a84b2c0d5fa23da6d6c8c0d5f5c93184a2744d3e (diff) | |
| download | linux-eade1e0a4fb31d48eeb1589d9bb859ae4dd6181d.tar.bz2 | |
chtls: Added a check to avoid NULL pointer dereference
In case of server removal lookup_stid() may return NULL pointer, which
is used as listen_ctx. So added a check before accessing this pointer.
Fixes: cc35c88ae4db ("crypto : chtls - CPL handler definition")
Signed-off-by: Vinay Kumar Yadav <vinay.yadav@chelsio.com>
Signed-off-by: Ayush Sawal <ayush.sawal@chelsio.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c index ff3969a24d74..1c6d3c93a0c8 100644 --- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c +++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c @@ -1597,6 +1597,11 @@ static int chtls_pass_establish(struct chtls_dev *cdev, struct sk_buff *skb) sk_wake_async(sk, 0, POLL_OUT); data = lookup_stid(cdev->tids, stid); + if (!data) { + /* listening server close */ + kfree_skb(skb); + goto unlock; + } lsk = ((struct listen_ctx *)data)->lsk; bh_lock_sock(lsk); |