ksmbd: validate request buffer size in smb2_allocate_rsp_buf()

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commit 17cf0c2794 upstream.

The response buffer should be allocated in smb2_allocate_rsp_buf
before validating request. But the fields in payload as well as smb2 header
is used in smb2_allocate_rsp_buf(). This patch add simple buffer size
validation to avoid potencial out-of-bounds in request buffer.

Cc: stable@vger.kernel.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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Namjae Jeon 2024-04-12 09:45:00 +09:00 • committed by Greg Kroah-Hartman

parent b80ba64871

commit 21ff9d7d22

1 changed files with 4 additions and 0 deletions

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fs/smb/server/smb2pdu.c

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