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fpc: Prevent a buffer-overflow on data reading

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Reported by: Keith Linneman (LinnemanLabs)
This commit is contained in:
Marco Trevisan (Treviño)
2026-07-13 08:13:46 +00:00
committed by Marco Trevisan
parent 092c0dfc31
commit 3cc0ae79e7
1 changed files with 9 additions and 0 deletions
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libfprint/drivers/fpcmoc/fpc.c
+9
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@@ -173,6 +173,15 @@ fpc_cmd_receive_cb (FpiUsbTransfer *transfer,
return; return;
} }
if (transfer->actual_length > sizeof (fpc_cmd_response_t))
{
fp_err ("%s recv evt data length (%ld) exceeds buffer size (%ld)",
G_STRFUNC, transfer->actual_length, sizeof (fpc_cmd_response_t));
fpi_ssm_mark_failed (transfer->ssm,
fpi_device_error_new (FP_DEVICE_ERROR_DATA_INVALID));
return;
}
data->resp_len = transfer->actual_length; data->resp_len = transfer->actual_length;
if (data->callback) if (data->callback)