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media: venus: hfi: fix the check to handle session buffer requirement
commitb18e36dfd6
upstream. Buffer requirement, for different buffer type, comes from video firmware. While copying these requirements, there is an OOB possibility when the payload from firmware is more than expected size. Fix the check to avoid the OOB possibility. Cc: stable@vger.kernel.org Fixes:09c2845e8f
("[media] media: venus: hfi: add Host Firmware Interface (HFI)") Reviewed-by: Nathan Hebert <nhebert@chromium.org> Signed-off-by: Vikash Garodia <quic_vgarodia@quicinc.com> Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -350,7 +350,7 @@ session_get_prop_buf_req(struct hfi_msg_session_property_info_pkt *pkt,
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memcpy(&bufreq[idx], buf_req, sizeof(*bufreq));
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idx++;
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if (idx > HFI_BUFFER_TYPE_MAX)
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if (idx >= HFI_BUFFER_TYPE_MAX)
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return HFI_ERR_SESSION_INVALID_PARAMETER;
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req_bytes -= sizeof(struct hfi_buffer_requirements);
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