ksmbd: add low bound validation to FSCTL_SET_ZERO_DATA

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[ Upstream commit 2d74ec9713 ]

Smatch static checker warning:
 fs/ksmbd/smb2pdu.c:7759 smb2_ioctl()
 warn: no lower bound on 'off'

Fix unexpected result that could caused from negative off and bfz.

Fixes: b5e5f9dfc9 ("ksmbd: check invalid FileOffset and BeyondFinalZero in FSCTL_ZERO_DATA")
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Namjae Jeon 2023-03-05 21:04:00 +09:00 • committed by Greg Kroah-Hartman

parent 82268b2da2

commit bd344dc3bb

1 changed files with 1 additions and 1 deletions

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fs/ksmbd/smb2pdu.c

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