4.19-stable review patch. If anyone has any objections, please let me know.
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From: Vikash Garodia quic_vgarodia@quicinc.com
commit b18e36dfd6c935da60a971310374f3dfec3c82e1 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: 09c2845e8fe4 ("[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 --- drivers/media/platform/qcom/venus/hfi_msgs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/platform/qcom/venus/hfi_msgs.c +++ b/drivers/media/platform/qcom/venus/hfi_msgs.c @@ -359,7 +359,7 @@ session_get_prop_buf_req(struct hfi_msg_ memcpy(&bufreq[idx], buf_req, sizeof(*bufreq)); idx++;
- if (idx > HFI_BUFFER_TYPE_MAX) + if (idx >= HFI_BUFFER_TYPE_MAX) return HFI_ERR_SESSION_INVALID_PARAMETER;
req_bytes -= sizeof(struct hfi_buffer_requirements);