Namjae Jeon 88b7f1143b ksmbd: validate payload size in ipc response
[ Upstream commit a677ebd8ca2f2632ccdecbad7b87641274e15aac ]

If installing malicious ksmbd-tools, ksmbd.mountd can return invalid ipc
response to ksmbd kernel server. ksmbd should validate payload size of
ipc response from ksmbd.mountd to avoid memory overrun or
slab-out-of-bounds. This patch validate 3 ipc response that has payload.

Cc: stable@vger.kernel.org
Reported-by: Chao Ma <machao2019@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-27 17:05:22 +02:00
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