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Input: atmel_mxt_ts - fix double free in mxt_read_info_block

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commit 12f247ab590a08856441efdbd351cf2cc8f60a2d upstream.

The "id_buf" buffer is stored in "data->raw_info_block" and freed by
"mxt_free_object_table" in case of error.

Return instead of jumping to avoid a double free.

Addresses-Coverity-ID: 1474582 ("Double free")
Fixes: 068bdb67ef ("Input: atmel_mxt_ts - fix the firmware update")
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Link: https://lore.kernel.org/r/20211212194257.68879-1-jose.exposito89@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
José Expósito 2021-12-12 21:01:49 -08:00 committed by Greg Kroah-Hartman
parent 30140e252f
commit bc674f1b21
1 changed files with 1 additions and 1 deletions
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2
drivers/input/touchscreen/atmel_mxt_ts.c
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@ -1839,7 +1839,7 @@ static int mxt_read_info_block(struct mxt_data *data)
if (error) {
dev_err(&client->dev, "Error %d parsing object table\n", error);
mxt_free_object_table(data);
goto err_free_mem;
return error;
}
data->object_table = (struct mxt_object *)(id_buf + MXT_OBJECT_START);