ksmbd: fix integer overflows on 32 bit systems

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commit aab98e2dbd upstream.

On 32bit systems the addition operations in ipc_msg_alloc() can
potentially overflow leading to memory corruption.
Add bounds checking using KSMBD_IPC_MAX_PAYLOAD to avoid overflow.

Fixes: 0626e6641f ("cifsd: add server handler for central processing and tranport layers")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dan Carpenter 2025-01-15 09:28:35 +09:00 • committed by Greg Kroah-Hartman

parent 5b199733b9

commit b4b9027377

1 changed files with 9 additions and 0 deletions

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fs/smb/server/transport_ipc.c

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