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ksmbd: free aux buffer if ksmbd_iov_pin_rsp_read fails

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commit 108a020c64434fed4b69762879d78cd24088b4c7 upstream.

ksmbd_iov_pin_rsp_read() doesn't free the provided aux buffer if it
fails. Seems to be the caller's responsibility to clear the buffer in
error case.

Found by Linux Verification Center (linuxtesting.org).

Fixes: e2b76ab8b5 ("ksmbd: add support for read compound")
Cc: stable@vger.kernel.org
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fedor Pchelkin
2024-02-05 14:19:16 +03:00
committed by Greg Kroah-Hartman
parent 9f6087851e
commit 7505a0ce08
1 changed files with 6 additions and 2 deletions
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8
fs/smb/server/smb2pdu.c
View File

@@ -6171,8 +6171,10 @@ static noinline int smb2_read_pipe(struct ksmbd_work *work)
err = ksmbd_iov_pin_rsp_read(work, (void *)rsp,
offsetof(struct smb2_read_rsp, Buffer),
aux_payload_buf, nbytes);
if (err)
if (err) {
kvfree(aux_payload_buf);
goto out;
}
kvfree(rpc_resp);
} else {
err = ksmbd_iov_pin_rsp(work, (void *)rsp,
@@ -6382,8 +6384,10 @@ int smb2_read(struct ksmbd_work *work)
err = ksmbd_iov_pin_rsp_read(work, (void *)rsp,
offsetof(struct smb2_read_rsp, Buffer),
aux_payload_buf, nbytes);
if (err)
if (err) {
kvfree(aux_payload_buf);
goto out;
}
ksmbd_fd_put(work, fp);
return 0;