From: Vikash Garodia quic_vgarodia@quicinc.com
stable inclusion from stable-v6.6.3 commit db6bd4724356f4046f7b54dd4443cb272bfec6e8 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8LBQP
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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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 Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/media/platform/qcom/venus/hfi_msgs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/qcom/venus/hfi_msgs.c b/drivers/media/platform/qcom/venus/hfi_msgs.c index 7cab685a2ec8..0a041b4db9ef 100644 --- a/drivers/media/platform/qcom/venus/hfi_msgs.c +++ b/drivers/media/platform/qcom/venus/hfi_msgs.c @@ -398,7 +398,7 @@ session_get_prop_buf_req(struct hfi_msg_session_property_info_pkt *pkt, 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);