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nvme-tcp: fix UAF when detecting digest errors

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[ Upstream commit 160f3549a907a50e51a8518678ba2dcf2541abea ]

We should also bail from the io_work loop when we set rd_enabled to true,
so we don't attempt to read data from the socket when the TCP stream is
already out-of-sync or corrupted.

Fixes: 3f2304f8c6 ("nvme-tcp: add NVMe over TCP host driver")
Reported-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sagi Grimberg 2022-09-05 13:54:17 +03:00 • committed by Greg Kroah-Hartman
commit 19816a0214
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/host/tcp.c
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@ -1074,7 +1074,7 @@ static void nvme_tcp_io_work(struct work_struct *w)
if (result > 0)
pending = true;
if (!pending)
if (!pending || !queue->rd_enabled)
return;
} while (!time_after(jiffies, deadline)); /* quota is exhausted */