5.15-stable review patch. If anyone has any objections, please let me know.
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From: Vikash Garodia quic_vgarodia@quicinc.com
commit 172bf5a9ef70a399bb227809db78442dc01d9e48 upstream.
There is a possibility that init_codecs is invoked multiple times during manipulated payload from video firmware. In such case, if codecs_count can get incremented to value more than MAX_CODEC_NUM, there can be OOB access. Reset the count so that it always starts from beginning.
Cc: stable@vger.kernel.org Fixes: 1a73374a04e5 ("media: venus: hfi_parser: add common capability parser") Reviewed-by: Bryan O'Donoghue bryan.odonoghue@linaro.org Signed-off-by: Vikash Garodia quic_vgarodia@quicinc.com Signed-off-by: Hans Verkuil hverkuil@xs4all.nl Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/platform/qcom/venus/hfi_parser.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/media/platform/qcom/venus/hfi_parser.c +++ b/drivers/media/platform/qcom/venus/hfi_parser.c @@ -19,6 +19,8 @@ static void init_codecs(struct venus_cor struct hfi_plat_caps *caps = core->caps, *cap; unsigned long bit;
+ core->codecs_count = 0; + if (hweight_long(core->dec_codecs) + hweight_long(core->enc_codecs) > MAX_CODEC_NUM) return;